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Best Frequency Counters & Pulse Generators - Buying Guide

Last Updated: 06/19/2019

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Bestselling Frequency Counters & Pulse Generators on Amazon

  1. 15KV High Voltage Generator Boost Step-up High Power Module Inverter Arc Igniter Coil Module Disasse...
  2. Blue LED 4-Digital 0 - 9999 Up / Down Digital Counter
  3. Auto Digital Counter Mini 4 Digit 0-999 Counter Up/Down Plus/Minus Panel Counter Meter with Cable(Green)
  4. DIGITEN DC 12V 24V 4 Digital Blue LED Counter Meter Up Down+Hall Proximity Switch Sensor
  5. Frequency Counter, RISEPRO Digital Bench Frequency Signal Meter with AC Power Cable BNC Test Leads 1...
  6. Inkbird Digital Tact Switch Preset Scale Counter Register Twin Timer Relay Time Delay (IDT-E2RH Timer)
  7. DIGITEN 110V-240V 6-Digit 0-999999 LED Display Digital UP Counter+Hall NPN Proximity sensor switch+holder
  8. B&K Precision 1823A Universal Frequency Counter with Ratio Function, 2.4 GHz
  9. DROK 0.56"Red LED Display Digital Tally Counter 0-9999 Up Down Counter Totalizer Electronic Counter ...
  10. High Voltage Pulse Generator DC 3-4.8V 400kV Super Arc Pulse Ignition Transformer Boost Step-up Coil...

  #1

15KV High Voltage Generator Boost Step-up High Power Module Inverter Arc Igniter Coil Module Disassembled Parts for DIY Use (PACK OF 2 SETS)

 Ean: 0663862534030   |    PartNumber: Walfrontxk1fo9ytgn   |   Asin: B076PJVJWV



The module is made according to the theory of Tesla coil, it's small in size and high in efficiency, the high voltage can reach about 15KV at the output, there are 2 sets in disassembled parts, very popular among electronics enthusiasts, widely used for electrical research and DIY use.

With the high voltage pulse current output and boost step-up power module, the high frequency arc has a high temperature which can easily ignited, When the circuit works, it produces a stable high frequency arc, the temperature is very high, which is easily combustible, so some people call it the plasma lighter.

It can be used as the high voltage source for high school science experiment, electronic salute, electronic instrument, negative ion generator and small scientific production.



Specifications:

Input Voltage: 3.7-4.2V

Current: 2A

Output Voltage: 15KV

Output Current: 0.4A

Arc Discharge Distance: 5-10mm/0.016-0.032inches

PCB Size: 42 32 1.6mm/1.65 1.26 0.06inches

Quantity: 2 sets



Note:

1, the paint of the enameled wire of the welding parts should be scraped and welded lightly before the welding of the transformer.

2, to ensure safety, please keep away from the old and the children while using.

Features

  • Efficiently Working--The module is made according to the theory of Tesla coil, it's small in size and high in efficiency, the high voltage can reach about 15KV at the output
  • Package of 2 Sets--There are 2 sets in disassembled parts, very popular among electronics enthusiasts, widely used for electrical research and DIY use
  • High Voltage--With the high voltage pulse current output and boost step-up power module, the high frequency arc has a high temperature which can easily ignited.
  • Widely Used-- It can be used as the high voltage source for high school science experiment, electronic salute, electronic instrument, negative ion generator and small scientific production
  • Just like the Plasma Lighter -- When the circuit works, it produces a stable high frequency arc, the temperature is very high, which is easily combustible, so some people call it the plasma lighter
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Brand: Walfront   |   Manufacturer: Walfront

Package Dimensions: 1.02 x 2.68 x 4.06 inches (2.6 x 6.8 x 10.3 cm)

Amazon Price: $6.99 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $9.99

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  #2

Blue LED 4-Digital 0 - 9999 Up / Down Digital Counter

Model: STK0114007580   |    Mpn: STK0114007580   |    Ean: 0092145594995   |    PartNumber: STK0114007580   |   Asin: B00CBA8JF0

Features:

With high-speed IC, bright Blue LED
Easy to install
Good stability with strong anti-interference
Counting value be retained when power failure
Widely used in Automatic Burden System, Winding Machine, packaging machinery, textile machinery, etc
0000 to 9999 cycle counting
From 9999 to 0000 then always display 0000
Specifications:

Product model: GDD7949AT-P24V
Power Supply: DC5V 28V
Operating current: 30mA
input Signal: Pulse or switch
Trigger Mode: Rising edge
Display: Blue LED
Display Range: 0000 9999
Reset Signal: Pulse or switch2
Panel Cutout Dimension: Approx. 76.5 x 39.2mm
Overall Dimension: Approx. 79 x 43 x 30.5mm
Working Environment: 0 to 50 ; 85RH
Package Includes:

1 x Digital Counter
2 x Cable
1 x Manual

Features

  • With high-speed IC, bright Blue LED
  • Easy to install
  • Good stability with strong anti-interference
  • Counting value be retained when power failure
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Manufacturer: Generic

Package Dimensions: 1 x 3.2 x 3.8 inches (2.5 x 8.1 x 9.7 cm)

Amazon Price: $14.99 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $19.29

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  #3

Auto Digital Counter Mini 4 Digit 0-999 Counter Up/Down Plus/Minus Panel Counter Meter with Cable(Green)

 Ean: 0719527780639   |    PartNumber: TOPINCN7m1oekw9n4-03   |   Asin: B07N4LJP7B

Description:
This digital display counter has bright LED light, high accuracy, good stability, and easy installation. The meter retains the number automatically when power off.

Features:
4 digit bright LED light, clear to read. Good stability, high accuracy, and easy installation. Counting value will be retained when power failure. Wide application to automation equipment and test equipments, etc. Compact size, beautiful appearance, and Blue, Green, Red, three color for you to choose.

Specifications:
Working voltage: DC 8-24V
DC current: 30mA
Counting: Plus or minus
Counting range: 0-9999
Digit number: 4 digit
Color(Optional): Red, Blue, Green
Size: Approx. 8 x 4 x 2.5cm / 3.1 x 1.5 x 0.9inch
Weight: 48g

Wire diagram:
Terminal 1: Positive
Terminal 2: Ground
Terminal 3: Signal Ground
Terminal 4: Clear
Terminal 5: Switch Pulse Signal
Terminal 6: Blue wire for increasing
Terminal 7: Black wire for decreasing
Note: The 5-Pin cable is used to connect with the counter.

Packaging Include:
1 x Digital Display Counter
1 x 5-pin Cable

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Features

  • 4 digit bright LED light, clear to read.
  • Good stability, high accuracy, and easy installation.
  • Counting value will be retained when power failure.
  • Wide application to automation equipment and test equipments, etc.
  • Compact size, beautiful appearance, and Blue, Green, Red, three color for you to choose.
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Brand: TOPINCN   |   Manufacturer: TOPINCN

Package Dimensions: 1.8 x 2.1 x 3.2 inches (4.6 x 5.3 x 8.1 cm)

Amazon Price: $10.69 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $10.69

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  #4

DIGITEN DC 12V 24V 4 Digital Blue LED Counter Meter Up Down+Hall Proximity Switch Sensor

 Ean: 0600748801244   |    PartNumber: GDDS-05   |   Asin: B016U4IXSU

Features

High-speed IC,bright red LED,easy to install.
Good stability, strong Anti-interference.
Counting value be retained when power failure.
Widely use in Automatic Burden System,Winding Machine,packaging machinery,textile machinery,etc.
The meter retain the number automatically when power cut off.

Specifications:

Power supply:DC12V/DC24V
DC Current 30mA
Sign:Pusle signal,NPN 3 wires normally closed
trigger mode: rising edge
Display dimension: 0.56" Blue
Reset signal:Pulse or switch
Counting:Plus or minus
Response frequency: 100HZ
Display range:0-9999
Panel cutout dimension:76.5mm*39.2mm
Overall dimension: 79mm*43mm*30.5mm
Sensor dimention: M12x10x55mm.
Detection range: 10mm
Detected objects: magnet
Sensor appearance:M12mm cylinder.
Sensor wiring:brown---Power+;blue---Power-;black---signal.
Operating temperature: 0 to 50 .

Packaging include

4 Digit blue counter x 1
Hall proximity sensor x 1(come with magnet)
4 wires cable x 1
2 wires cable x 1
Instruction x 1

Features

  • Power supply:DC12V/DC24V
  • Hall sensor:Pusle signal,NPN 3 wires normally closed
  • Counting:Plus or minus
  • Counting value be retained when power failure.
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Brand: DIGITEN   |   Manufacturer: DIGITEN

Package Dimensions: 1.42 x 3.31 x 7.05 inches (3.6 x 8.4 x 17.9 cm)

Amazon Price: $18.99 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $18.99

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  #5

Frequency Counter, RISEPRO Digital Bench Frequency Signal Meter with AC Power Cable BNC Test Leads 10Hz - 2.4 GHz VC3165

 Ean: 0712962230905   |    PartNumber: VC3165   |   Asin: B01LWIPALE

Brief Description

This frequency counter measures signals over a wide range from 0.01 Hz to 2.4 GHz. The gate time is continuously varying from 100ms to 10s. The maximum power consumption is only 5W.

The instrument provides high performance stability and function at low cost. The counter can measure frequency, period and equal-precision. It is also featured with 3 step function selection, work state, unit and eight-digit LED display.

All functions in this frequency counter depend on a single CPU. A crystal-controlled temperature circuit provides a constant compensation for temperature change, thus reducing measurement errors typically caused by temperature drift. The Channel B (CH. B) input has an attenuator (x1, x20), AC/DC coupling for a low-pass filter.

One Set Included

1 x Frequency Counter
1 x Test probe with BNC type connector
1 x Instruction Manual
Standard Factory Package

Features

  • With 3 steps function selection: work state, unit & 8-digit LED display
  • Frequency measurement from 0.01 Hz to 2.4 GHz
  • Cyclic measuring range from 0.5 ms to 10 s
  • With attenuation of 20 dB and input impedance of 1 MO
  • With frequency, period and equal-precision measurement
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Brand: RISEPRO   |   Manufacturer: RISEPRO

Package Dimensions: 6.2 x 11.2 x 11.7 inches (15.7 x 28.4 x 29.7 cm)

Amazon Price: $73.90 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $73.90

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  #6

Inkbird Digital Tact Switch Preset Scale Counter Register Twin Timer Relay Time Delay (IDT-E2RH Timer)

Model: CECOMINOD004404   |    Mpn: IDT-E2RH-220   |    Ean: 7241871117777   |    PartNumber: IDT-E2RH-220   |   Asin: B008KV65MS

Features:
DIN(48X48mm) Digital counter
0.01s-99h99m time range with twin time set value individual, Output for A,B Period One shot or cycle time mode, up or down mode available
MCU for digital countrol, High accuracy and reliability
NPN and PNP input switchable
0.39" height LED, Prevent dazzle,Highly visible display
Tact switch for up or down set value, easily operate
Key lock function, Prevent mistake operation
Switching power supply and low consumption

Specification
Front Panel Dimension: DIN 48mm(W)X48mm(L)
Power Supply Voltage: AC 100-240V 50/60Hz
Operating voltage range 85 110% Rated voltage
Time Range: 0.01s-99h99m time range with twin time set value individual, Up or Down Mode, Output for A,B Period
Character: PV: 4 digital 9.9mm height Red LED Letters
SV: 4 digital 8mm height Green LED Letters
Contact Output: AC250V 3A(Resistive Load) A: NO/NC B: NO
Life expectancy of Relay: Mechanical 10,000,000 operations
Electrical 10,000,000 operations
Accuracy: 1.1% +-0.05s
Countrol Signals: >=5ms(Reset, Gate)
Control/Input Type: Contact/No-voltage input(NPN)/Voltage input(PNP)
External Power: DC12V/50mA(Max.) for sensor use only.
Reset Method: Power on/External/Manual
Cutout size: 45x45mm
Mounting Method: Flush mounting and screw terminals
Weight: Approx. 130g

Environmental Conditions: -10 55oC no icy or condensation , RH 35-85% Humidity Storage Temperature: -25 65oC no icy or condensation
IDT-E2RH has certificate of RoHS, EMC, LVD compliance
Package included:
1 x Digital timer
1 x Manual

Features

  • 0.01s-99h99m time range with twin timer set value individual
  • One shot or cycle time mode, up or down mode
  • NPN and PNP input switchable
  • Tact switch for up or down set value, easily operate
  • Output: 2 Relay
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Brand: Inkbird   |   Manufacturer: Lerway Tech

Item Dimensions: 13.58 x 33.46 x 29.53 inches (34.5 x 85.0 x 75.0 cm)   |   Package Dimensions: 2.44 x 2.48 x 5.47 inches (6.2 x 6.3 x 13.9 cm)

Amazon Price: $26.99 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $31.99

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  #7

DIGITEN 110V-240V 6-Digit 0-999999 LED Display Digital UP Counter+Hall NPN Proximity sensor switch+holder

 PartNumber: HMC11-6H-220-HALL   |   Asin: B01DGDHO1U

HMC11 series electronic accumulative counter, adopts low power integrated circuit, high bright LED Display with clear appearance. It has power off memory without machine damage, durable enough. It is widely used to production line counting, flow counting, rotation counting, length counting, times counting and such occasions.

Specification

Power supply: 100-240VAC
Power consumption: Approx.10W
Range: 0-999999
Counting speed: 10 times/s
Hall sensor: Pusle signal,NPN 3 wires normally closed, Lenth is 1.2m
Reset time: 0.5s
Reset method: Panel button,manual
Detection range: 10mm
Detected objects: magnet
Cutting size: 38.5x27.5mm
Working temp: 0-50C
Data storage: 10 years
Power wire length: 1.2m

Packaging list

1 x HMC-6H counter
1 x Hall sensor
1 x Sensor holder
1 x Power wire

Features

  • Power supply:AC100-240V
  • Count Range: 0-999999
  • UP plus pulse meter
  • Hall sensor: NPN NC
  • Data be retained when power failture
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Brand: DIGITEN   |   Manufacturer: DIGITEN

Item Dimensions: 33.46 x 15.75 x 22.44 inches (85.0 x 40.0 x 57.0 cm)   |   Package Dimensions: 1.8 x 4 x 5.6 inches (4.6 x 10.2 x 14.2 cm)

Amazon Price: $24.99 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $24.99

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  #8

B&K Precision 1823A Universal Frequency Counter with Ratio Function, 2.4 GHz

Model: 1823A   |    Mpn: 1823A   |    Ean: 0817050182316   |    PartNumber: 1823A   |   Asin: B005J6LP72

The 1823A and 1856D are reciprocal 2.4 GHz and 3.5 GHz frequency counters that are microprocessor controlled. Their LED displays can provide up to nine digits of resolution using an external time base with a 10 s gate time. The high accuracy, sensitivity, and versatility of these counters make them an extremely valuable instrument to scientists, engineers, and communications technicians for a broad spectrum of laboratory and service applications.

Features

  • 1 PPM Time base stability
  • External frequency standard input
  • Bright LED display
  • Attenuator
  • Low pass filter
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Brand: B&K Precision   |   Manufacturer: B&K Precision Corporation

Package Dimensions: 7.5 x 12.5 x 13.8 inches (19.1 x 31.8 x 35.1 cm)

Amazon Price: $407.48 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $470.00

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  #9

DROK 0.56"Red LED Display Digital Tally Counter 0-9999 Up Down Counter Totalizer Electronic Counter with Magnetic Induction Switch DC5V

Model: 100262   |    Mpn: 100262   |    Ean: 0533593041230   |    PartNumber: 100262   |   Asin: B00LSGG4XC

Technical parameters: Input pulse signal: open NPN / PNP collector contact switches, non-contact switch, limit switch, level pulse and so on. Input signal voltage: High level H = 4 ~ 30V, low level L = 0 ~ 0.6V, falling edge trigger Measuring range: 0 to 9999 cumulative count Count input frequency: less than 2000Hz Display: 0.56"high brightness LED Power supply: DC 5V 10%; 80mA Working temperature: -10 ~ 60 c (relative humidity of 80% or less) Dimensions: 79 x 43 x 25mm Mounting Hole Size: 75 x 39.5mm Using: Move the magnet close to the magnetic proximity switch about 0.5-1 cm, then take the magnet away from the magnetic proximity switch for a certain distance (typically 3-5 cm or more). Then the product start counting and screen display add 1 per repeated movement. The counter should works on recurring machine, such as counting the up and down movement of punch, counting the circles of flywheel. Note: 1, the count signal and reset signal input switching should closer to the counter terminal. 2, to avoid unnecessary interference, if necessary, please use shielded cable, shield connected to the count terminal "+". 3, recommended to use magnetic switch.

Features

  • Accurate digital counter with 0.56" LED display, magnetic induction switch.
  • Need seperate power, input DC5V, input current is less than 80mA, has a long service life.
  • Meassuring range is 0 to 9999, count input frequency id less than 2000Hz
  • Input signal voltage, High level H = 4 ~ 30V, low level L = 0 ~ 0.6V, falling edge trigger.
  • NPN/PNP open collector, contact switch, switch, limit switch, pulse of electrical level.
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Brand: DROK   |   Manufacturer: DROK

Item Dimensions: 1.69 x 0.98 x 3.11 inches (4.3 x 2.5 x 7.9 cm)   |   Package Dimensions: 1.9 x 4.9 x 5.9 inches (4.8 x 12.4 x 15.0 cm)

First Available: 2017-05-15

Amazon Price: $14.07 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $14.07 | Used Price: $7.76

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  #10

High Voltage Pulse Generator DC 3-4.8V 400kV Super Arc Pulse Ignition Transformer Boost Step-up Coil Module DIY for Cigarette Lighter(Square Shape)

 Ean: 0794419152251   |    PartNumber: 9687283011   |   Asin: B07KCL3HJP

Description:
This module can be used as high voltage source for high school science experiment, electronic instrument, negative ion generator, high voltage ignition, DIY science products and other little science.

Specification:

Input voltage: 3.0 -4.8V (1 3.7v lithium battery )
Input current: 1-3A
Output voltage: about 400KV (please pay attention to safety when using
Output current: 0.5A
Discharge distance between high voltage poles: 0.5-1.5cm (beyond limits)
Work continuously time: within 10 seconds
Attention! The input voltage will affect the output voltage and arc distance.
Shape: T shape, L shape, square shape, round shape(Optional)
Weight: Approx.32g~37g/1.1oz~1.3oz

Wiring method:

Input end: red+, yellow-
Output end: 2 pcs same colors wire

Package list:

1 Pulse Generator

Note:
1.Avoid high-voltage no-load power supply. (it is necessary to adjust the appropriate distance of the high-voltage cable end before energizing. The distance of the high-voltage cable to pull the arc is directly proportional to the voltage and capacity of the battery used. When measuring arc distance, the test shall be conducted from short to long.
2.Power is strictly forbidden when exceeding the maximum arc distance. As the high voltage energy cannot be released, modules are easily damaged.
3.The power is large, and it is not suitable for internal heat dissipation, so it cannot work for a long time.
4.About the input power: 3.7-v lithium battery can be used in series, such as 18650 battery or Nickel-cadmium/Ni-mh battery , or 4V lead Acid batteries

Features

  • [High Quality] The pulse generator is made of high quality material with long service life, durable and easy to use.
  • [Powerful] After the input of DC3-4.8V voltage, a dc high voltage of about 10,000V (about 1-2 cm of arc) can be obtained at the output end, small volume and high efficiency.
  • [Feature] The boost step-up coil module can generate high temperature and high frequency arc to easily ignite combustible such as smoke, paper and candle. There are four different shapes of pulse generator for choice, including T shape, L shape, square shape and round shape.
  • [Good Performance] According to the tesla coil principle, the module outputs high voltage pulse current, thus it will generate the electric arc between the two wires. The peripheral circuit is simple (simply connect the switch, install the battery), the discharge intensity is violent.
  • [Application] This module can be used as high voltage source for high school science experiment, electronic instrument, negative ion generator, high voltage ignition, DIY science products and other little science.
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Brand: Wal front   |   Manufacturer: Wal front

Item Dimensions: 1.18 x 1.18 x 2.36 inches (3.0 x 3.0 x 6.0 cm)   |   Package Dimensions: 1 x 2 x 3 inches (2.5 x 5.1 x 7.6 cm)

Amazon Price: $11.59 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $11.59

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  #11

Icstation Digital 2 Channal PWM Square Wave Pulse Signal Generator Adjustable Frequency Duty Cycle 100% 1Hz-150KHz

Model: 2 Channel Sqaure Wave Pulse Generator   |    Mpn: 966801   |    PartNumber: 966801   |   Asin: B01MA1M7Y9

Icstation mini digital square waveform generator module supporting 1Hz-150KHz frequency and 0%-100% duty cycle adjustment through the on-board momentary push button and also support external seial communication. DC 5V-30V wide voltage input and dual channel complementary output with red LED display the parameter ideal as the square wave source for instrument testing or driving the stepper motor and so on.

Specifications:
Frequency Range: 1Hz-150KHz
Duty Cycle Range: 0%-100%
Accuracy: 2%
Working Voltage: DC 5-30V
Output Current: 8-30mA
Output Amplitude: 5V V-PP (default, changed by external power supply)
Module Size: 41*29 mm / 1.61*1.14 inch (L*W)

Package Included:
1X Digital 2 Channel Square Wave Pulse Signal Generator Module 1Hz-150KHz 0%-100%

Display Instructions:
There are 3 display range:
1:XXXX->the unit is 1Hz, range is 1Hz-999Hz
2.XX.X->the unit is 0.1KHz,range is 0.1KHz-99.9KHz
3.X.X.X.->the unit is 1KHz, range is 1KHz-150KHz
e.g.:100->100Hz;54.1->54.1KHz;1.2.4.->12KHz

Setting Instructions:
1. Short press"Set" to interchange display the 4 values(FR1:PWM1 frequency;dU1:PWM1 duty cycle;FR2:PWM2 frequency;dU2:PWM2 duty cycle)
2. press"Up" and "Down" to set the current value

Serial Control:
Baud Rage: 9600pbs; Date Bit: 8; Stop Bit: 1;
1. Set the PWM frequency: "S1FXXXT": set the PWM1 frequency as XXX HZ(0001-999); "S1FXX.XT": set the PWM1 frequency as XXX KHZ(00.1-99.9); "S1FX.X.X.T": set the PWM1 frequency as XXX KHZ(0.0.1.-1.5.0.)(S1->PWM1; s2->PWM2; F->frequency; D->duty cycle; T->Stop bit)
2.Set the PWM duty cycle: "S1DXXXT": set the PWM1 duty cycle as XXX(001-100); "S2DXXXT": set the PWM2 duty cycle as XXX(001-100)
3.DOWN: set successful; FALL: set fail.

Features

  • Digital square waveform generator module support 1Hz-150KHz frequency and 0%-100% duty cycle adjusting independently through the on-board momentary push button
  • Dual channel fequency signal and duty cycle complementary output, easier to control
  • DC5-30V wide voltage input(support micro USB 5V input),3 digit LED display the parameter easy to read, serial communication interface easy to connect and controlled by MCU
  • Used as square wave source for instrument testing,driving the stepper motor, PWM control the motor speed / LED light brightness
  • 1, Fulfilled by Amazon usually spend 2-4 days to delivery, and fulfilled by seller usually delivery in around 17 days = ((( 0 ) from China, with tracking information.
    2, We provide application consulting and replace service in case you received a defective one, please rest assured to buy it.
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Brand: IS   |   Manufacturer: Icstation

Package Dimensions: 0.16 x 1.3 x 2.76 inches (0.4 x 3.3 x 7.0 cm)

Amazon Price: $8.99 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $10.99

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  #12

DIGITEN DC 12V 4 Digital Red LED Counter Meter Up Down+Hall Proximity Switch Sensor NPN

 Ean: 0600748801251   |    PartNumber: GDDS-06   |   Asin: B016U4IZ6K

Features

High-speed IC,bright red LED,easy to install.
Good stability, strong Anti-interference.
Counting value be retained when power failure.
Widely use in Automatic Burden System,Winding Machine,packaging machinery,textile machinery,ect.
The meter retain the number automatically when power cut off.

Specifications:

Power supply:DC12V
DC Current:30mA
Sign:Pusle signal,NPN 3 wires normally closed
trigger mode: rising edge
Display dimension: 0.56" RED
Reset signal:Pulse or switch
Counting:Plus or minus
Response frequency: 100HZ
Display range:0-9999
Panel cutout dimension:76.5mm*39.2mm
Overall dimension: 79mm*43mm*30.5mm
Sensor dimention: M12x10x55mm.
Detection range: 10mm
Detected objects: magnet
Sensor appearance:M12mm cylinder.
Sensor wiring:brown---Power+;blue---Power-;black---signal.
Operating temperature: 0 to 50 C.

Packaging include

4 Digit red counter x 1
Hall proximity sensor x 1(come with magnet)
4 wires cable x 1
2 wires cable x 1
Instruction x 1

Features

  • Power supply:DC12V
  • Hall sensor:Pusle signal,NPN 3 wires normally closed
  • Counting:Plus or minus
  • Counting value be retained when power failure.
  • See more on Amazon...

Brand: DIGITEN   |   Manufacturer: TmallTech

Package Dimensions: 1.4 x 3.3 x 3.5 inches (3.6 x 8.4 x 8.9 cm)

Amazon Price: $16.99 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $16.99

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  #13

Uxcell a12082000ux0647 H7EC-BLM 0-999999 Counting Range No-Voltage Required Digital Counter

Model: a12082000ux0647   |    Mpn: a12082000ux0647   |    Ean: 0696738199378   |    PartNumber: a12082000ux0647   |   Asin: B009NC9M0U

Description: This counter requires No External Power Supply! Widely applied to various electrical calculation in different industries. The panel design with self rest locking make that operate it correctly.

Features

  • Product Name: Counter; Model: H7EC-BLM
  • Number of Digits: 6;Counting Range: 0 - 999999
  • Counter Size: 4.8 x 2.4 x 5.2cm/ 1.9 x 0.9 x 2 (L*W*T);Mounting Size: 4.4 x 2.2 x 4.2cm/1.73 x 0.86 x 1.65(L*W*Depth)
  • Color: As Picture Shown; Net Weight: 51g
  • Package Content: 1 x Counter
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Brand: uxcell   |   Manufacturer: uxcell

Package Dimensions: 1.1 x 1.9 x 2.8 inches (2.8 x 4.8 x 7.1 cm)

First Available: 2018-08-22

Amazon Price: $11.19 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $11.20

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  #14

DIGITEN RF Frequency Detector Cymometer Meter Scanner Counter 250-450MHZ

 Ean: 0736950393908   |    PartNumber: RFCO-01   |   Asin: B018E3WETO

It is a frequency tester of remote control, which can test the frequency of remote control exactly and show out clearly. It make you easy to adjust the exact frequency that you want when you are confecting the remote control.

Test method: So long as you approach the remote control to the tester not above 10cm, it can test your remote control exactly.

Application range: Electric door controller, auto door etc burglar alarm controller .remote control, electric lock, garage doorremote control ,entrance guard ,and so on.

Features

Test coverage: 250-450MHZ.
Working voltage: DC7.5-10V(advise battery:6F22, don't include).
Working current: 51mA.
Standby current: 40mA.
Test distance: 10cm.

Features

  • Working voltage: DC7.5-10V(advise battery:6F22,don't include)
  • Test frequency range: 250-450MHZ
  • Test distance: 10cm
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Brand: DIGITEN   |   Manufacturer: DIGITEN

Item Dimensions: 3.74 x 0.98 x 2.36 inches (9.5 x 2.5 x 6.0 cm)   |   Package Dimensions: 1 x 3 x 4.2 inches (2.5 x 7.6 x 10.7 cm)

Amazon Price: $19.99 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $19.99

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  #15

DIGITEN 12V 4 Digit Red Counter Meter+Infrared Proximity Photoelectric Switch Sensor NPN

 Ean: 0600748801206   |    PartNumber: GDDS-02   |   Asin: B016U4J190

Features & Specifications

Power supply:DC12V
DC Current 60mA
Sign:Pusle signal
Infrared photoelectric switch sensor:NPN 3 wires normally open,NO,6-36VDC
trigger mode: rising edge
Display dimension: 0.56" RED
Reset signal:Pulse or switch
Counting:Plus or minus
Response frequency: 100HZ
Display range:0-9999
Panel cutout dimension:76.5mm*39.2mm
Overall dimension: 79mm*43mm*30.5mm
Sensor dimention: M18x70mm.
Detection distance: 10mm
Sensor cable length:1200mm
The meter retain the number automatically when power cut off.
Sensor wiring:brown---Power+; blue---Power-;black---signal.
Operating temperature: 0 to 50 C.

Packaging include

4 Digit red counter x 1
IR proximity sensor x 1
4 wires cable x 1
2 wires cable x 1
Instruction x 1

Features

  • Power supply:DC12V
  • Infrared photoelectric switch sensor:NPN 3 wires normally open,NO,6-36VDC
  • Counting:Plus or minus
  • Response frequency: 100HZ
  • The meter retain the number automatically when power cut off.
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Brand: DIGITEN   |   Manufacturer: DIGITEN

Package Dimensions: 1.4 x 4 x 4 inches (3.6 x 10.2 x 10.2 cm)

Amazon Price: $18.99 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $18.99

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  #16

TWTADE/ 110-220VAC LED Auto Display Digital Counter 0-999999 6 Digits + Hall Proximity Sensor Switch Distance 10CM NPN NO + Holder

 Ean: 0720643000143   |    PartNumber: JSQ+GD+CT 10mm   |   Asin: B07MV9HYNC

JDM11-6H series electronic accumulative counter, adopts low power integrated circuit, high bright LED Display with clear appearance. It has power off memory without machine damage, durable enough. It is widely used to production line counting, flow counting, rotation counting, length counting, times counting and such occasions.

Features

  • Product Name: Counter Power supply: AC110-240V Display range:0-999999 The meter retain the number automatically when power cut off.
  • Product Name Hall sensor Output State : NPN NO; Detection distance: 10mm .
  • Product wiring: please refer to my picture; The picture show. Picture 5
  • Overall dimension: 57mm*40mm*85mm ;Panel cutout dimension:51mm*27mm; Sensor head dimention: M12x32mm; Power lead: 1.5m(5ft), US plug.
  • Package Content: 6 Digits red counter x 1; Photoelectric sensor x 1; Power plug wire x 1; Sensor mounting holder x 1;
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Brand: TWTADE   |   Manufacturer: TWTADE

Package Dimensions: 2.2 x 4.7 x 6.3 inches (5.6 x 11.9 x 16.0 cm)

Amazon Price: $24.99 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $24.99

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  #17

NE555 Duty Cycle Frequency Adjustable Square Wave Signal Generator Board Module by Envistia Mall

 PartNumber: NE555 Module   |   Asin: B07QKPLR4M

This NE555 square wave pulse generator module can be used to produce square wave signals for experimental development or in applications such as driving stepper motors, and as an adjustable pulse generator for microcontroller (MCU) applications.

Features an NE555 timer chip configured in four frequency ranges, 1Hz to 50Hz, 50Hz to 1kHz, 1kHz to 10kHz and 10kHz to 200kHz all adjustable with onboard jumpers and two trim-pots to adjust the output frequency and the duty cycle.

Input voltage to the module (VCC) is variable from 5V to 15V DC and draws approximately 15mA at 5v (35mA at 12v) with an output amplitude of 4.2V peak-to-peak to 11.4V peak-to-peak based on the supply voltage.

An indicator LED illuminates on a low-level output and flashes relative to the output frequency. At higher frequencies, the LED will appear to be on solid and without a visible flash.

Features & Specifications:

Size: 31mm * 22mm Main chip: NE555 Input Voltage (VCC): 5V-15VDC Input current:~100MA Output amplitude: 4.2V V-PP to 11.4V V-PP. (Varries with VCC voltage) Maximum output current: 15MA (VCC=5V, V-PP greater than 50%), 35MA (VCC=12V, V-PP greater than 50%) Output LED indicator (low level, LED is on, high level, LED is off; LED flashes with frequency The output frequency is continuously adjustable using the onboard jumpers and potentiometers. Jumper settings are:

1Hz ~ 50Hz
50Hz ~ 1kHz
1KHz ~ 10kHz
10kHz ~ 200kHz

The output duty cycle can fine-tuned using the onboard potentiometers. Duty cycle and frequency are not separately adjustable; adjusting the duty cycle will change the frequency.

Package Includes:

1X NE555 Duty Cycle Adjustable Pulse Frequency Square Wave Signal Generator Module Printed schematic, installation and operation instructions

Features

  • NE555 square wave pulse generator module can be used to produce square wave signals
  • Use as a square wave signal generator for experimental development
  • Generate a square wave signal to drive a stepper motor
  • Generate adjustable pulses for microcontrollers (MCU)
  • Variable frequency & duty cycle from 1Hz to 200KHz with amplitudes from 4.2V to 11.4V peak-to-peak
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Brand: Envistia Mall   |   Manufacturer: Envistia Mall

Item Dimensions: 0.59 x 0.87 x 1.22 inches (1.5 x 2.2 x 3.1 cm)   |   Package Dimensions: 0.65 x 4 x 7 inches (1.7 x 10.2 x 17.8 cm)

Amazon Price: $4.79 | as of 06/19/2019(12:01pm pst)
Availibility:
List Price: $4.79

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  #18

DROK 090710 Two wires AC 80-300V 10-199.9HZ Digital Frequency Counter Cymometer Frequency Monitor Tester Panel Gauge 3 Digits Blue Backlight LCD Display

Model: 090710   |    Mpn: 090710   |    Ean: 0619397030097   |    PartNumber: 090710   |   Asin: B00CHFO4DK

Parameters
Range: 10-199.9Hz can only test frequency voltage
Voltage Range: AC 80V - 300V
Measurement accuracy: 0.5% +/- 2 words
Accuracy : 0.1Hz
Backlight colors: Blue
Cutting Size: 76x39 mm
Thickness: 40mm
Dimensions: 79x43x25 mm
Power : Two wires access, Doesn't Require a Power Supply

Package Includes:
1x Digital Frequency Meter

Features

  • Accuracy adjustment: rotate potentiometer by screwdriver clockwise/counter clockwise to turn up/D
  • It adopts microcomputer Intelligent design to ensure stability and reliability
  • Installation Hole creates convenient and easy mounting
  • LCD material is used in display screen; black word in Blue background is Clear to read
  • It is two-wires access and doesn't require extra power supply
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Brand: DROK   |   Manufacturer: DROK

Package Dimensions: 1.1 x 2.5 x 3.9 inches (2.8 x 6.4 x 9.9 cm)

Amazon Price: $10.47 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $10.47

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  #19

Guaranteed - Omron H7CS-B Counter Module

 PartNumber: H7CS-B   |   Asin: B0161FUWVY

This item is used and in working condition.

Features

Brand: Omron   |   Manufacturer: Omron

Item Dimensions: 18 x 16 x 23 inches (45.7 x 40.6 x 58.4 cm)   |   Package Dimensions: 16 x 18 x 23 inches (40.6 x 45.7 x 58.4 cm)

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  #20

PWM Frequency Meter, Yeeco 1Hz-150KHz 0-100% Adjustable PWM Square Wave Pulse Signal Generator 3.3-30V 5V 12V 24V Frequency Duty Cycle Module with Protective Shell LCD Display

 Ean: 0751565001864   |    PartNumber: 1800523   |   Asin: B07KQ4NL9Q

Are you looking for a large adjustable ranged frequency duty cycle meter for your power supply? Is the PWM in the market look so thin and not heavy duty enough?
Why not try our Yeeco PWM Frequency Meter! Clear bright display with adjustable buttons, easy to adjust frequency and duty ratio.

Specification:
Item name: Yeeco PWM Frequency Meter
Rating voltage: 3.3-30V
Frequency range: 1Hz-150KHz
Signal capacity: 5-30mA output current
Output frequency: PWM frequency equals to input voltage
Working environment: -20-70

Feature:
LCD display output frequency and duty cycle with protective shell.
Large adjustable range of frequency, high accuracy.
Instruction is included in the item. If there is any question or problem, please feel free to contact us directly.

Features

  • PWM frequency generator with 3.3-30V working voltage, 5-30mA output current, and nice to work in -20-70 working environment
  • Large adjustable range of PWM frequency meter, widely adjust 4 frequency ranges within 1Hz to 150KHz, high accuracy of 2% on every frequency; Serial communication pulse generator module, SCM TTL level convenient to use
  • Clear frequency display, LCD display available to show frequency and duty cycle value; Welding and non-welding terminal from choosing, nice to connect with; Protective shell protect module from breaking or dust
  • Frequency duty ratio meter with 4 buttons for setting frequency and duty ratio, data and parameter will automatically save after setting and never lose any data when power off
  • Pulse signal generator ideal to be square wave signal generator, controlling motor driver, power supply of MCU and other adjustable PWM controlling circuit
  • See more on Amazon...

Brand: Yeeco   |   Manufacturer: Yeeco

Package Dimensions: 1.1 x 1.7 x 4 inches (2.8 x 4.3 x 10.2 cm)

Amazon Price: $15.99 | as of 06/19/2019(12:01pm pst)
Availibility: Usually ships in 24 hours
List Price: $21.99

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