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Best Photo Detectors - Buying Guide

Last Updated: 11/20/2018

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Bestselling Photo Detectors on Amazon

  1. Lexan Housing with Weatherproof Sealant Photocontrol, 2080-2770VA Ballast, SPST Switch, 3470-4620W P...
  2. Tork Photo Electric Control Model 2000
  3. PODOY 20PCS Photoresistor GL5537 5537 LDR Photo Resistors Light-Dependent
  4. 5000M Series Delayed Response Utility Grade Mov Surge Arrestor Photocontrol, 1800VA, 2080-2770VA Bal...
  5. Tork 3002 Photo Control, Flush Mounting, Mechanism with Gasket, 208-277V
  6. Intermatic LC4536C 120VAC to 277VAC Locking Thermal Photocontrol
  7. Quick Response Turn-Lock Mounting Photocontrol, 1800VA Ballast, 1000W Power, 105-130VAC Voltage, Grey
  8. Ltvystore 100PCS GL5539 5539 Light Dependent Resistor LDR 5MM Photoresistor Photoconductive Cell Res...
  9. 100PCS Photoresistor 5MM GL5537 LDR Photo Resistors Light-Dependent Resistor
  10. Quick Response Turn-Lock Mounting Photocontrol, 1800VA Ballast, 1000W Power, 105-285VAC Voltage, Blue

  #1

Lexan Housing with Weatherproof Sealant Photocontrol, 2080-2770VA Ballast, SPST Switch, 3470-4620W Power, 208-277VAC Voltage

Model: 2000-2   |    Mpn: 2000-2   |    Ean: 0786261600189   |    PartNumber: 2000-2   |   Asin: B00CUNDY7Q

This NSi Industries 2000-2 switch and photocontrol accepts 208-277 VAC input and each of its three circuits can activate a 2,770 ballast for lighting control. The integral photocell turns on lighting when the ambient light level drops below a user-selectable light level of 1 to 5 foot candles (fc) and turns the lighting off when the level is at 3 to 15 fc. The single-pole single-throw (SPST) contacts are housed within impact-resistant dome. The base is ultrasonically welded for maximum strength and the sensor accepts 1/2" conduit and has 180-degree swivel capacity. This switch and photo sensor unit is Underwriter Laboratories (UL) Listed and Canadian Standards Association (CSA) certified for quality assurance and is suitable for controlling lighting.

Specifications Switch type Photo sensor and switch, weatherproof Input power supply 120/277 VAC, 50/60 Hz, 1 watt power consumption Output contacts SPST contacts, 2,770 watt ballast capable, 4,620 watt load On/off control On at user-selectable 1 to 5 fc, Off at 3 to 15 fc Enclosure 1/2" conduit mount, indoor/outdoor use Terminal wire size range #16 AWG (American wire gauge) Operating temperature range -40 to +140 degrees F (-40 to +60 degrees C) Standards met UL Listed, CSA certified
Automatic switches are used to turn on or off electrical devices and are activated by time, light, and motion. Time activated switches (also known as timers) operate at preset time intervals during a daily or weekly period and can be either mechanical or electronic. Mechanical timers feature a dial with multiple pins to set the on/off time intervals. Electronic timers feature an LCD display and pushbuttons to set the time intervals. Light activated switches (also known as optical or photo) operate when ambient light levels reach preset values, generally measured in foot candles. Motion-activated switches (also known as motion sensors) operate when an electronic field of a preset range is interrupted. These switches can include energy saving logic that uses combinations of time, light, and motion to operate and can include one or more device outlets or circuit contacts. Automatic switches are used to control indoor lights, outdoor lights, appliances, and small equipment motors.

NSi Industries manufactures electrical components and sensors, lighting products, and energy management products. The company, founded in 1975, is headquartered in Huntersville, NC.

Features

  • Photocontrol for switching lights on/off based on ambient light
  • One to 15 foot candle light level sensitivity for varying light levels
  • 208-277 VAC input voltage for multiple uses
  • Dome and base ultrasonically welded for maximum strength
  • Mounting for 1/2 conduit with 180-degree swivel
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Brand: TORK a brand of NSi Industries, LLC   |   Manufacturer: NSi Industries

Package Dimensions: 2 x 2.4 x 5.4 inches (5.1 x 6.1 x 13.7 cm)

Amazon Price: $5.50 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 24 hours
List Price: $12.76

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  #2

Tork Photo Electric Control Model 2000

Model: 2000   |    Mpn: 2000   |    Ean: 0786261600172   |    PartNumber: 2000   |   Asin: B002GOYTIW

'Photocontrol, Mounting Fixed, 1/2 In. Conduit, Voltage 120VAC, Max. Wattage 2000, Max. Incandescent Amps 16.7, Max. Ballast Amps 15, 1 to 5 Foot Candles On, 3 to 15 Foot Candles Off, Color Gray, Temp. Range -40 Degrees to 140 Degrees F, Length 3-1/2 In., Width 1-5/8, Contact Form SPST, Housing Material Lexan(R), Setting On at Dusk, Off at Dawn, Standards UL, CSA, Includes Color Coded Leads'

Features

  • Price For: Each Description/Special Features: Built-in Delay of up to Two Minutes Prevents False Switching, LED Rated Item: Photocontrol Voltage: 120VAC Max. Wattage: 2000 Includes: Lock Nut and Gasket Max. Ballast Amps: 15.0 Max. Incandescent Amps: 16.7 Contact Form: SPST Foot Candles Off: 3 to 15 Foot Candles On: 1.0 to 5.0 Mounting: Fixed, 1/2" Conduit
  • Housing Material: Lexan(R) Color: Gray Setting: Dusk to Dawn Standards: UL, cUL Length: 3-1/2 Enclosure Type: Raintight Depth: 1-5/8 Width: 1-5/8 Temp. Range: -40 Degrees to 140 Degrees F Manufacturers Warranty Length: 5 yr. Country of Origin (subject to change): China
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Brand: Tork   |   Manufacturer: Tork

Item Dimensions: 2 x 1 x 3 inches (5.1 x 2.5 x 7.6 cm)   |   Package Dimensions: 1.8 x 2.3 x 5.4 inches (4.6 x 5.8 x 13.7 cm)

Amazon Price: $7.50 | as of 11/20/2018(7:02am pst)
Availibility:
List Price: $20.00

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  #3

PODOY 20PCS Photoresistor GL5537 5537 LDR Photo Resistors Light-Dependent

Model: SKRGL5537   |    Mpn: GL   |    Ean: 7294104285361   |    PartNumber: GL   |   Asin: B016D737Y4

Sunkee 20pcs Photoresistor LDR CDS 5mm Light-Dependent Resistor Sensor GL5537

Features

  • Model:GL5537
  • Brightresistance 10Lux K :18-50
  • Maximum Voltage:(V-DC) 150
  • Maxim Power Consumption mW 100
  • Dark Resistance M :2 , 100 10 0.7
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Brand: SUNKEE   |   Manufacturer: SUNKEE

Amazon Price: $1.95 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 1-2 business days
List Price: $5.00

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  #4

5000M Series Delayed Response Utility Grade Mov Surge Arrestor Photocontrol, 1800VA, 2080-2770VA Ballast, 1/2" Light Sensor, 2000W Power, 105-130/208-285VAC Voltage, Blue (Note: This item is not designed for use with LED lighting)

Model: 5007M   |    Mpn: 5007M   |    Ean: 0786261610140   |    PartNumber: 5007M   |   Asin: B0057SG2B6

This NSi Industries 5007M photocontrol accepts 105-130/208-285 VAC input, has a 1,800/2,080-2,770 VA ballast capability, and can power a 2,000/3,470-4,620 watt lamp for applications such as street and highway lighting. The 1/2" cadmium sulphide photocell turns on lighting when the ambient light level drops below one to three foot candles (fc) and works with screw-base compact fluorescent (CFL) bulbs. The photocell turns lighting off when the level exceeds three foot candles. The metal oxide varistor (MOV)-type surge arrestor reduces electric noise interference. The polypropylene photocell housing is UV stabilized and the clear acrylic window is UV-resistant. This photocontrol unit meets EEI NEMA standards for locking-type photocontrols, is Underwriter Laboratories (UL) Listed and Canadian Standards Association (CSA) certified, and is suitable for controlling lighting.

Features

  • Cadmium sulphide photocell for on/off control
  • MOV-type surge arrestor for surge protection
  • Instant On cycle, delay of three to five seconds for Off cycle
  • 105-130/208-285 VAC input voltage, 1,800/2,080-2,770 VA ballast, 2,000/3,470-4,620 W output
  • Polypropylene housing, UV stabilized
  • NOTE: This item is not designed for use with LED lighting
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Brand: Tork   |   Manufacturer: NSi Industries

Package Dimensions: 2.8 x 3.3 x 3.3 inches (7.1 x 8.4 x 8.4 cm)

Amazon Price: $2.20 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 24 hours
List Price: $10.34

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  #5

Tork 3002 Photo Control, Flush Mounting, Mechanism with Gasket, 208-277V

Model: NSI3002   |    Mpn: 3002   |    Ean: 0786261600196   |    PartNumber: 3002   |   Asin: B004FV298G

Tork 3002 SPST Flush Mounting Lexan Housing Photo Control APPLICATIONS: Pole Lanterns, Lawn Lighting, Walkways. FEATURES:SENSOR: Conformal coated cadmium sulphide photocell resists effects of moisture and airborne contaminants. Photocell responds to the light spectrum near to that of a human eye. OPERATION: Delay up to two minutes to prevent false switching due to light from passing vehicles, lightning, etc. STANDARDS: Meets ANSI/UL773AHOUSING and MOUNTING: Flush mounting through .6875" hole in post lantern or lighting fixture, 3/8" NPT, stem 3/4" long. Gasket and nut supplied. Control housing is weather-resistant molded Lexan with ultrasonically welded seams. ENERGY SAVINGS: Works with screw base CFLs. ON/OFF: Turn ON is 1 to 5fc. Turn OFF is 3 to 15fc. TIME DELAY: ON and OFFCELL: Cadmium sulphide, conformed coated, 1/2 inch diameter. CONTACTS: Normally closed (the unit fails in the ON position)LEAD WIRES: Three color coded, minimum 9 inch wire leads, #16AWG, rated for 105 degrees CPOWER CONSUMPTION: Averages under 1 watt. TEMPERATURE RANGE: -40 degrees to +140 degrees F (-40 degrees to +60 degrees C).

Features

  • Photo Controls
  • Tork 3002 - Photo Control - Flush Mounting - Mechanism with Gasket Only - 208-277 Volt
  • Tork 3002
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Brand: Tork   |   Manufacturer: NSI Industries

Package Dimensions: 1.3 x 2.4 x 3.3 inches (3.3 x 6.1 x 8.4 cm)

Amazon Price: $7.03 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 1-2 business days
List Price: $9.99

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  #6

Intermatic LC4536C 120VAC to 277VAC Locking Thermal Photocontrol

Model: LC4536C   |    Mpn: 02955   |    Ean: 0078275029552   |    PartNumber: 02955   |   Asin: B00BDBSMIW

The LC4500 Series Photocontrols feature low cost locking-type mounting, and thermal-type controls for street lighting and other applications requiring a twist and lock type plug connection. Thermal-type photocontrols provide dusk-to-dawn lighting control and a delay action, which eliminates loads switching OFF due to car headlights and lightning. The thermal-type controls feature a cadmium sulfide photocell and polypropylene case to seal out moisture. The design utilizes a dual temperature compensating bimetal and composite resistor for reliable long life operation over ambient temperature extremes. California Title 24 compliant. CSA certified. UL listed.

Features

  • Polypropylene housing with UV protection
  • 1800-4155 Watts Tungsten
  • 8.3 Amps Ballast
  • 120-277 Volts AC
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Brand: Intermatic   |   Manufacturer: Intermatic Incorporated

Item Dimensions: 3 x 2.75 x 2.75 inches (7.6 x 7.0 x 7.0 cm)   |   Package Dimensions: 3.2 x 3.2 x 3.3 inches (8.1 x 8.1 x 8.4 cm)

Amazon Price: $6.20 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 24 hours
List Price: $19.99

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  #7

Quick Response Turn-Lock Mounting Photocontrol, 1800VA Ballast, 1000W Power, 105-130VAC Voltage, Grey

Model: 2005A   |    Mpn: 2005A   |    Ean: 0786261620125   |    PartNumber: 2005A   |   Asin: B00CUND6MO

This NSi Industries 2005A photocontrol accepts 105-130 VAC input, has a 1,800 VA ballast capability, and can power a 1,000 watt lamp for applications such as street and highway lighting. The cadmium sulphide photocell turns on lighting when the ambient light level drops below one to three foot candles (fc) and works with screw-base compact fluorescent (CFL) and LED bulbs. The photocell turns lighting off when the level exceeds three foot candles. The polypropylene photocell housing is UV stabilized and the clear acrylic window is UV-resistant. This photocontrol unit meets EEI NEMA standards for locking-type photocontrols, is Underwriter Laboratories (UL) Listed for quality assurance, and is suitable for controlling lighting.

Specifications Photocell type Cadmium sulphide photo sensor and switch, turn-lock mount Input power supply 105-130 VAC, 60 Hz Output 1,000 watts On/off control 1-3 fc ambient light, instant On, 3-5 seconds Off delay Enclosure Gray polypropylene, UV stabilized Mount style Turn-lock mount Operating temperature range -40 to +158 degrees F (-40 to +70 degrees C) Standards met UL Listed, ANSI C136.10, EEI NEMA
Automatic switches are used to turn on or off electrical devices and are activated by time, light, and motion. Time activated switches (also known as timers) operate at preset time intervals during a daily or weekly period and can be either mechanical or electronic. Mechanical timers feature a dial with multiple pins to set the on/off time intervals. Electronic timers feature an LCD display and pushbuttons to set the time intervals. Light activated switches (also known as optical or photo) operate when ambient light levels reach preset values, generally measured in foot candles. Motion-activated switches (also known as motion sensors) operate when an electronic field of a preset range is interrupted. These switches can include energy saving logic that uses combinations of time, light, and motion to operate and can include one or more device outlets or circuit contacts. Automatic switches are used to control indoor lights, outdoor lights, appliances, and small equipment motors.

NSi Industries manufactures electrical components and sensors, lighting products, and energy management products. The company, founded in 1975, is headquartered in Huntersville, NC.

Features

  • Cadmium sulphide photocell for on/off control
  • Turns on at one to three foot candles of ambient light
  • Instant On cycle, delay of three to five seconds for Off cycle
  • 105-130 VAC input voltage, 1,800 VA ballast, 1,000 W output
  • Polypropylene housing, UV stabilized
  • See more on Amazon...

Brand: TORK a brand of NSi Industries, LLC   |   Manufacturer: NSi Industries

Item Dimensions: 3.7 x 3.1 x 3.2 inches (9.4 x 7.9 x 8.1 cm)   |   Package Dimensions: 2.8 x 3.2 x 3.3 inches (7.1 x 8.1 x 8.4 cm)

Amazon Price: $12.56 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 24 hours
List Price: $28.13

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  #8

Ltvystore 100PCS GL5539 5539 Light Dependent Resistor LDR 5MM Photoresistor Photoconductive Cell Resistance Assortment Kit for Arduino

 Ean: 0601263306610   |   Asin: B071KCD7SJ

Ltvystore 100PCS Photoresistor GL5539 5539 LDR Photo Resistors Light-Dependent LDR 5MM for Arduino


Maximum voltage (v-dc) : 150
Maximum power consumption (mW) : 100
Ambient temperature ( C) : - 30 - + 70
Spectral peak (nm) : 540
Dark Resistance M :5 , 100 10 0.8
Brightresistance (10 lux) (K) : 30 - 90
Response time (ms) : rise: 20
Fallen: 30

Features

  • Light Dependent Resistor Kit
  • Model:GL5539
  • Brightresistance 10Lux K :30-90
  • Maximum Voltage:(V-DC) 150; Maxim Power Consumption mW 100
  • Dark Resistance M :5 , 100 10 0.8
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Brand: Ltvystore   |   Manufacturer: Ltvystore

Package Dimensions: 0.39 x 0.39 x 0.39 inches (1.0 x 1.0 x 1.0 cm)

Amazon Price: $9.99 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 24 hours
List Price: $9.99

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  #9

100PCS Photoresistor 5MM GL5537 LDR Photo Resistors Light-Dependent Resistor

Model: GL5537   |    Mpn: 001CDS00001-ZYJ   |    Ean: 0615867615122   |    PartNumber: 001CDS00001-ZYJ   |   Asin: B00P2KBYVC

A photoresistor or light-dependent resistor (LDR) or photocell is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity; in other words, it exhibits photoconductivity. A photoresistor can be applied in light-sensitive detector circuits, and light- and dark-activated switching circuits.

Features

  • Size: 5.0mm x 2.0mm
  • Maximum Voltage: 150 Volt DC
  • Maximum Wattage: 100mW
  • Spectral Peak: 540nm
  • Light Resistance (10 Lux): 30 to 50 Kohm
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Brand: Neutral   |   Manufacturer: CYD

Item Dimensions: 2 x 2 x 2 inches (5.1 x 5.1 x 5.1 cm)   |   

Amazon Price: $4.99 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 2-3 business days
List Price: $7.50

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  #10

Quick Response Turn-Lock Mounting Photocontrol, 1800VA Ballast, 1000W Power, 105-285VAC Voltage, Blue

Model: 2007A   |    Mpn: 2007A   |    Ean: 0786261620132   |    PartNumber: 2007A   |   Asin: B004FV0JKQ

This NSi Industries 2007A photocontrol accepts 105-285 VAC input, has a 1,800 VA ballast capability, and can power a 1,000 watt lamp for applications such as street and highway lighting. The cadmium sulphide photocell turns on lighting when the ambient light level drops below one to three foot candles (fc) and works with screw-base compact fluorescent (CFL) and LED bulbs. The photocell turns lighting off when the level exceeds three foot candles. The polypropylene photocell housing is UV stabilized and the clear acrylic window is UV-resistant. This photocontrol unit meets EEI NEMA standards for locking-type photocontrols, is Underwriter Laboratories (UL) Listed for quality assurance, and is suitable for controlling lighting.

Specifications Photocell type Cadmium sulphide photo sensor and switch, turn-lock mount Input power supply 105-285 VAC, 50/60 Hz Output 1,000 watts On/off control 1-3 fc ambient light, instant On, 3-5 seconds Off delay Enclosure Blue polypropylene, UV stabilized Mount style Turn-lock mount Operating temperature range -40 to +158 degrees F (-40 to +70 degrees C) Standards met UL Listed, ANSI C136.10, EEI NEMA
Automatic switches are used to turn on or off electrical devices and are activated by time, light, and motion. Time activated switches (also known as timers) operate at preset time intervals during a daily or weekly period and can be either mechanical or electronic. Mechanical timers feature a dial with multiple pins to set the on/off time intervals. Electronic timers feature an LCD display and pushbuttons to set the time intervals. Light activated switches (also known as optical or photo) operate when ambient light levels reach preset values, generally measured in foot candles. Motion-activated switches (also known as motion sensors) operate when an electronic field of a preset range is interrupted. These switches can include energy saving logic that uses combinations of time, light, and motion to operate and can include one or more device outlets or circuit contacts. Automatic switches are used to control indoor lights, outdoor lights, appliances, and small equipment motors.

NSi Industries manufactures electrical components and sensors, lighting products, and energy management products. The company, founded in 1975, is headquartered in Huntersville, NC.

Features

  • Cadmium sulphide photocell for on/off control
  • Turns on at one to three foot candles of ambient light
  • Instant On cycle, delay of three to five seconds for Off cycle
  • 105-285 VAC input voltage, 1,800 VA ballast, 1,000 W output
  • Polypropylene housing, UV stabilized
  • See more on Amazon...

Brand: NSI   |   Manufacturer: NSi Industries

Package Dimensions: 3.3 x 3.3 x 3.6 inches (8.4 x 8.4 x 9.1 cm)

Amazon Price: $24.06 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 1-2 business days
List Price: $24.06

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  #11

VT43N1 LDR Photo Resistor - PhotoCell - Light Dependent Resistor - 10 Pcs

 PartNumber: 725185115201   |   Asin: B01GDCET6E

10 LDR PhotoResistors Light Dependent Resistors Photoconductive Cell (PhotoCells) VT43N1 (Perkin Elmer) Disc is approximately 3/8" Diameter. Length of wires: 1.5" These are small- fit in anywhere! (Ideal for many photo cell applications!) 10 - VT43N1 LDRs! Enough LDRs to build 10 copies of a resistive photocell circuit . These are great for the small electronic projects or prototypes where response to light is needed. Use with a transistor to control higher voltage/current circuits. "Buy It Now" VT43N1 Ratings: Light Dependent Resistor (LDR) 4 KOhm at Bright Light 200K Ohm Dark Maximum Voltage across LDR: 250V ************************************************** Be sure to add us to your favorites list!

Features

  • LDR Photo Resistor
  • 4 KOhm at Bright Light
  • 200K Ohm Dark
  • Maximum Voltage across LDR: 250V
  • Light Dependent Resistor
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Brand: PerkinElmer   |   Manufacturer: Perkin Elemer

Item Dimensions: 0.2 x 0.5 x 3 inches (0.5 x 1.3 x 7.6 cm)   |   

Amazon Price: $14.50 | as of 11/20/2018(7:02am pst)
Availibility:
List Price: $11.99

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  #12

Ltvystore 100PCS GL5537 5537 Light Dependent Resistor LDR 5MM Photoresistor Photoconductive Resistance Assortment Kit for Arduino

 Ean: 0601263306627   |   Asin: B072KKYC3Y

Ltvystore 100PCS Photoresistor GL5537 5537 LDR Photo Resistors Light-Dependent LDR 5MM for Arduino


Maximum voltage (v-dc) : 150
Maximum power consumption (mW) : 100
Ambient temperature ( C) : - 30 - + 70
Spectral peak (nm) : 540
Dark Resistance M :2 , 100 10 0.7
Brightresistance (10 lux) (K) : 18 - 50
Response time (ms) : rise: 20
Fallen: 30

Features

  • Light Dependent Resistor Kit
  • Model:GL5537
  • Brightresistance 10Lux K :18-50
  • Maximum Voltage:(V-DC) 150; Maxim Power Consumption mW 100
  • Dark Resistance M :2 , 100 10 0.7
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Brand: Ltvystore   |   Manufacturer: Ltvystore

Package Dimensions: 0.39 x 0.39 x 0.39 inches (1.0 x 1.0 x 1.0 cm)

Amazon Price: $8.99 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 24 hours
List Price: $10.99

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  #13

Accessory Photo Sensor

Model: EPC-LC   |    Mpn: EPC-LC   |    Ean: 0786261822338   |    PartNumber: EPC-LC   |   Asin: B00CTVYQ1M

This NSi Industries EPC-LC low-voltage photo sensor is a replacement photocell for use with ELC series time switches. This photo sensor has 1 to 250 foot candle (fc) light sensitivity. The impact-resistant dome and base are ultrasonically welded for maximum strength and the sensor mounts to 1/2" conduit and has 180-degree swivel capacity. This photo sensor is Underwriter Laboratories (UL) Listed and Canadian Standards Association (CSA) certified for quality assurance and is suitable for controlling lighting.

Specifications Sensor Low-voltage photo sensor On/off control 1-250 fc ambient light Enclosure Impact-resistant plastic Mount style 1/2" conduit mount. Maximum run length of 250' with #22 AWG (American wire gauge) and 500' with #18 AWG. Operating temperature range -31 to +131 degrees F (-35 to +55 degrees C) Standards met UL Listed, CSA certified Automatic switches are used to turn on or off electrical devices and are activated by time, light, and motion. Time activated switches (also known as timers) operate at preset time intervals during a daily or weekly period and can be either mechanical or electronic. Mechanical timers feature a dial with multiple pins to set the on/off time intervals. Electronic timers feature an LCD display and pushbuttons to set the time intervals. Light activated switches (also known as optical or photo) operate when ambient light levels reach preset values, generally measured in foot candles. Motion-activated switches (also known as motion sensors) operate when an electronic field of a preset range is interrupted. These switches can include energy saving logic that uses combinations of time, light, and motion to operate and can include one or more device outlets or circuit contacts. Automatic switches are used to control indoor lights, outdoor lights, appliances, and small equipment motors.

NSi Industries manufactures electrical components and sensors, lighting products, and energy management products. The company, founded in 1975, is headquartered in Huntersville, NC.

Features

  • Replacement photocell for use with NSi Industries ELC series time switches
  • 1 to 250 foot candle light level sensitivity for varying light levels
  • Impact-resistant enclosure for durability
  • Dome and base ultrasonically welded for maximum strength
  • Mounting for 1/2 conduit with 180-degree swivel
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Brand: TORK a brand of NSi Industries, LLC   |   Manufacturer: NSi Industries

Package Dimensions: 1.8 x 2.3 x 4.4 inches (4.6 x 5.8 x 11.2 cm)

Amazon Price: $139.00 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 24 hours
List Price: $192.94

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  #14

SODIAL(R)20PCS Photoresistor GL5528 LDR Photo Resistors Light-Dependent

Model: 048007   |    Mpn: 048007   |    Ean: 4894462861530   |    PartNumber: 048007   |   Asin: B0157PFTS0

20PCS Photoresistor GL5528 LDR Photo Resistors Light-Dependent Feature: Model: 5528 Light Resistance (10Lux) (K ) :10-20 Dark Resistance (M ): 1 100| 10: 0.6 Response Time (ms): rose: 20.Drop: 30 Illumination resistance characteristics: 3 package:20PCS Photoresistor GL5528 LDR Photo Resistors Light-Dependent Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.

Features

  • 20PCS Photoresistor GL5528 LDR Photo Resistors Light-Dependent?
  • Maximum voltage (V-dc): 150
  • The maximum power dissipation (mW): 100
  • Ambient temperature ( ): -30~+70
  • Spectral peak (nm): 540
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Brand: SODIAL   |   Manufacturer: SODIAL

Amazon Price: $1.81 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 1-2 business days
List Price: $1.81

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  #15

Wrisky DC 5V XH-M131 Light Control Switch Photoresistor Relay Module Detection Sensor

Asin: B01KUUH160

Material: Electrical components Color: See the picture Board parameters Light threshold can be adjusted by potentiometer to set the relay start Input: 5V DC Load capacity: 10A / AC 250V or DC up to 30V RED LED ON: Indicate the Power ON BLUE LED ON: Relay is working Module output terminal has three ports Normally open ( NO ) Common terminal ( COM ) Normally closed ( NC ) Size: See the picture No retail package Quantity:1Pc Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!! Package includes: 1Pc xDC 5V Photoresistor Module Relay Light Detection Sensor Light Control Switch

Features

  • Material: Electrical components
  • Load capacity: 10A / AC 250V or DC up to 30V
  • Light threshold can be adjusted by potentiometer to set the relay start
  • Input: 5V DC
  • Module output terminal has three ports
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Brand: Wrisky   |   Manufacturer: Wrisky

Amazon Price: $5.66 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 1-2 business days
List Price: $5.66

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  #16

50pcs of 5.9''Leads LDR Pre-Wired PHOTORESISTOR SG5539 Light Dependent Resistors

 Ean: 0761330037837   |    PartNumber: SG5539-LH160   |   Asin: B079K7MB8B


50pcs of 5.9''Leads LDR Pre-Wired PHOTORESISTOR SG5539 Light Dependent Resistors The SG5539 CdS photocell consists of a thin film of photoconductive material on a ceramic substrate . A unique method of lead wire attachment provides metallurgical bonding of the wire to the electrode and rigid anchoring of the lead in the ceramic , thus eliminating the need for conductive pastes . A thin plastic coating provides protection for the active surface. These sensors are non-polar resistive elements with spectral response characteristics close to the human eye (luminous efficiency), and the light dependent resistors are available in a wide range of resistance values . CdS photoconductive cells utilize photoconductive effects in semiconductors that decrease their resistance when illuminated by light , thus making their operating circuits simple and small. Applications
Camera Exposure Control
Auto Slide Focus - dual cell
Photocopy Machines - density of toner
Colorimetric Test Equipment
Densitometer
Electronic Scales - dual cell
Automatic Gain Control - modulated light source
Automated Rear View Mirror
Digital Applications:
Automatic Headlight Dimmer
Night Light Control
Oil Burner Flame Out
Street Light Control
Absence / Presence (beam breaker)
Position Sensor

Features

  • Epoxy encapsulated
  • Reliable Performance
  • Quick Response
  • Good Characteristic of Spectrum
  • Small Size
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Brand: Shine Gold Electronices   |   Manufacturer: Nanyang Shine Gold Electronices Co., Ltd.

Package Dimensions: 0.2 x 2.4 x 3.9 inches (0.5 x 6.1 x 9.9 cm)

Amazon Price: $15.99 | as of 11/20/2018(7:02am pst)
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List Price: $15.99

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  #17

5pcs Photoresistor Photoconductive Cell Light Dependent Resistor 100-200K LDR 20mm Ceramic Pacakge

 PartNumber: SG20549-2   |   Asin: B01J71Z1YM


5pcs Photoresistor Photoconductive Cell Light Dependent Resistor 100-200K LDR 20mm Ceramic Pacakge

CdS photoconductive cells utilize photoconductive effects in semiconductors that decrease their resistance when illuminated by light. These sensors are non-polar resistive elements with spectral response characteristics close to the human eye (luminous efficiency), thus making their operating circuits simple and small. Features Coated with epoxy Small volume Quick response Good reliability High sensitivity Good spectrum characteristic Applications Camera automation photometry Indoor sunlight control Industrial control Optical control lamp Optical control musicI.C Photoelectric control Annunciator Optical control switch Electronic toy Electronic proverbial vlitional Notes 1. To avoid the light-sensitive resistors on the humid, high temperature environment preservation. 2.In the use of the process, the welding time shortened as much as possible. 3.Note that lead soldering location should be 3 mm from the ceramic base (mm) or more.

Features

  • Allowable Power Dissipation ( PD ):500 mW ( Derate above 25 1.0 mW/ )
  • Maximum Applied Voltage (at 25 ):500V DC or AC
  • Ambient Temperature Range ( TA ) : -40 +75
  • Light Resistance at 10lux: 100-200K (2854k color temperature) and 2h pre-illuminaion at 400-600 lux prior to texting.)
  • Dark Resistance at 0Lux:.10/M ; Peak Spectral Response:540Nm
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Brand: Shine Gold Electronices Co., Ltd.   |   Manufacturer: Nanyang Shine Gold Electronices Co., Ltd.

Amazon Price: $13.20 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 1-2 business days
List Price: $13.20

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  #18

5000M Series Delayed Response Utility Grade Mov Surge Arrestor Photocontrol, 1800VA Ballast, 1/2" Light Sensor, 1000W Power, 105-130VAC Voltage, Grey

Model: 5021M   |    Mpn: 5021M   |    Ean: 0786261610157   |    PartNumber: 5021M   |   Asin: B00435HR4U

This NSi Industries 5021M photocontrol accepts 105-130 VAC input, has a 1,800 VA ballast capability, and can power a 2,000 watt lamp for applications such as street and highway lighting. The 1/2" cadmium sulphide photocell turns on lighting when the ambient light level drops below one to three foot candles (fc) and works with screw-base compact fluorescent (CFL) and LED bulbs. The photocell turns lighting off when the level exceeds three foot candles. The metal oxide varistor (MOV)-type surge arrestor reduces electric noise interference. The polypropylene photocell housing is UV stabilized and the clear acrylic window is UV-resistant. This photocontrol unit meets EEI NEMA standards for locking-type photocontrols, is Underwriter Laboratories (UL) Listed and Canadian Standards Association (CSA) certified, and is suitable for controlling lighting.

Specifications Photocell type Cadmium sulphide photo sensor and switch, turn-lock mount, MOV surge arrestor Input power supply 105-130 VAC, 60 Hz Output 2,000 watts On/off control 1-3 fc ambient light, instant On, 3-5 seconds Off delay Enclosure Gray polypropylene, UV stabilized Mount style Turn-lock mount Operating temperature range -40 to +140 degrees F (-40 to +60 degrees C) Standards met UL Listed, CSA certified, ANSI C136.10, EEI NEMA
Automatic switches are used to turn on or off electrical devices and are activated by time, light, and motion. Time activated switches (also known as timers) operate at preset time intervals during a daily or weekly period and can be either mechanical or electronic. Mechanical timers feature a dial with multiple pins to set the on/off time intervals. Electronic timers feature an LCD display and pushbuttons to set the time intervals. Light activated switches (also known as optical or photo) operate when ambient light levels reach preset values, generally measured in foot candles. Motion-activated switches (also known as motion sensors) operate when an electronic field of a preset range is interrupted. These switches can include energy saving logic that uses combinations of time, light, and motion to operate and can include one or more device outlets or circuit contacts. Automatic switches are used to control indoor lights, outdoor lights, appliances, and small equipment motors.

NSi Industries manufactures electrical components and sensors, lighting products, and energy management products. The company, founded in 1975, is headquartered in Huntersville, NC.

Features

  • Cadmium sulphide photocell for on/off control
  • MOV-type surge arrestor for surge protection
  • Instant On cycle, delay of three to five seconds for Off cycle
  • 105-130 VAC input voltage, 1,800 VA ballast, 2,000 W output
  • Polypropylene housing, UV stabilized
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Brand: Tork   |   Manufacturer: NSi Industries

Package Dimensions: 3.3 x 3.3 x 3.6 inches (8.4 x 8.4 x 9.1 cm)

Amazon Price: $13.32 | as of 11/20/2018(7:02am pst)
Availibility: Usually ships in 1-2 business days
List Price: $14.01

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  #19

Walmeck 20pcs Photoresistor LDR Photo Resistors Light Dependent Resistor 5mm GL5537

 PartNumber: UHD1126202950169RI   |   Asin: B07F1R4KP2

Specifications: Main Material: iron Model: GL5537 Maximum Voltage: 150 Volt DC Maximum Wattage: 100mW Operating Temperature: -30~70 C Spectral Peak: 540nm Light Resistance(10 Lux): 20-45K Dark Resistance: 2M Response time: Rise: 20ms; Drop: 30ms Item Size: 5 * 4 * 35mm Package Size: 6 * 5 * 1cm / 2.4 * 2 * 0.4in Package Weight: 6g / 0.2oz Package List: 20 * GL5537 Photoresistor

Features

  • 20pcs GL5537 5mm photoresistor.
  • Applicable to photoelectric control, indoor light control, alarm, industrial control, light control switch, electronic toys, etc.
  • Resin sealed.
  • Maximum Voltage: 150 Volt DC.
  • Maximum Wattage: 100mW.
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Brand: Walmeck   |   Manufacturer: Walmeck

Package Dimensions: 0.39 x 1.97 x 2.36 inches (1.0 x 5.0 x 6.0 cm)

Amazon Price: $3.57 | as of 11/20/2018(7:02am pst)
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List Price: $3.57

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  #20

Tork 5500 Series Shorting Cap

Model: 5500   |    Mpn: 5500   |    Ean: 0786261611307   |    PartNumber: 5500   |   Asin: B0080ICH9G

Provides a convenient and economical method of closing the primary circuit with a NEMA locking-type receptacle. Durable materials and gasket provide both long life and weatherproof protection. For use with all voltages.

Features

  • Durable materials and gasket provide both long life and weatherproof protection
  • Provides a convenient and economical method of closing the primary circuit with a NEMA locking-type receptacle
  • For use with all voltages
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Brand: Tork   |   Manufacturer: Tork

Item Dimensions: 3 x 3.25 x 3 inches (7.6 x 8.3 x 7.6 cm)   |   Package Dimensions: 2.75 x 3.25 x 3.25 inches (7.0 x 8.3 x 8.3 cm)

First Available: 2017-11-25

Amazon Price: $5.44 | as of 11/20/2018(7:02am pst)
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List Price: $12.01

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