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  Our Catalog   Optoelectronic Products   Photo Detectors

Photo Detectors - Blowout Sale! Save up to 89%


Blowout Sale! Up to 89% off on Photo Detectors at Buditech. Top brands include TORK a brand of NSi Industries, LLC, , Vishay / Siliconix, Everlight Americas Inc., System Sensor, NSI, & Tork. Hurry! Limited time offers. Offers valid only while supplies last.



NSI Industries Tork 403A Indoor General Purpose Mechanical Powerful and Compact Automatic Timer, Polarized Plug, 30 Minutes (Pack of 6)
NSI Industries Tork 403A Indoor General Purpose Mechanical Powerful and Compact Automatic Timer, Polarized Plug, 30 Minutes (Pack of 6)
In Stock
$453.39

mpn: 403A, ean: 0786261160515,

This NSi Industries 403A mechanical time switch accepts 120 VAC input, has one polarized outlet, and can power a 1,875 watt lamp or 1/3 hp motor. This timer includes 48 pairs of on/off set points, has a minimum cycle time of 30 minutes, and is suitab...


5400 Series 6000 Watt Contactors Photocontrol with Turn-Lock, DPST Switch, 277VAC Voltage
5400 Series 6000 Watt Contactors Photocontrol with Turn-Lock, DPST Switch, 277VAC Voltage
In Stock
$242.16

mpn: 5404-3, ean: 0786261600110,

This NSi Industries 5404-3 photocontrol accepts 277 VAC input and its DPST output contacts can activate a 6,000 watt lamp for applications such as street and highway lighting. The photocell turns on lighting at dusk and off at dawn and works with scr...








optocouplers & optoisolators photo transistor smd 8-pin dual dip (low profile) -EL827S1(TA)(Pack Of 12)
optocouplers & optoisolators photo transistor smd 8-pin dual dip (low profile) -EL827S1(TA)(Pack Of 12)
In Stock
$1,016.07

mpn: EL827S1(TA),

Description: The EL827series devices each of consist of an infrared emitting diodes, optically coupled to a phototransistor detector. They are packaged in a 8-pin DIP package and available in wide-lead spacing and SMD option. Features: Current transf...


Accessory Photo Sensor
Accessory Photo Sensor
In Stock
$192.94
$134.45
You Save: 30%

mpn: EPC-LC, ean: 0786261822338,

4.4 out of 5 stars with 49 reviews
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 ...


System Sensor D2 2-wire, photo, low flow
System Sensor D2 2-wire, photo, low flow
In Stock
$149.99
System Sensor D2 2-wire, photo, low flow...


T900 Series Photoelectric and 7 Day Control Combo Reserve Power Standard 2 Circuit Lighting Control Centers, Metal Indoor NEMA 1 with Switch Access, 120 VAC Input Supply, 2 SPDT Output Contact
T900 Series Photoelectric and 7 Day Control Combo Reserve Power Standard 2 Circuit Lighting Control Centers, Metal Indoor NEMA 1 with Switch Access, 120 VAC Input Supply, 2 SPDT Output Contact
In Stock
$2,541.18
$2,252.75
You Save: 11%

mpn: T920L-E, ean: 0786261410344,

4.6 out of 5 stars with 41 reviews
This NSi Industries T920-LE mechanical time switch and photocontrol accepts 120 VAC input and each of its two circuits can activate a 10 amp load or 1 hp motor. The included remote photocell turns on lighting when the ambient light level drops below ...


T900 Series Photoelectric and 7 Day Control Combo Reserve Power Standard 2 Circuit Lighting Control Centers, Metal Indoor/Outdoor NEMA 3, 120 VAC Input Supply, 2 SPDT Output Contact
T900 Series Photoelectric and 7 Day Control Combo Reserve Power Standard 2 Circuit Lighting Control Centers, Metal Indoor/Outdoor NEMA 3, 120 VAC Input Supply, 2 SPDT Output Contact
In Stock
$1,580.36
$1,565.95

mpn: T920L-O, ean: 0786261410351,

This NSi Industries T920-LO mechanical time switch and photocontrol accepts 120 VAC input and each of its two circuits can activate a 10 amp load or 1 hp motor. The included remote photocell turns on lighting when the ambient light level drops below ...


T900 Series Photoelectric and 7 Day Control Combo Reserve Power Standard 3 Circuit Lighting Control Centers, Metal Indoor NEMA 1, 120 VAC Input Supply, 3 SPDT Output Contact
T900 Series Photoelectric and 7 Day Control Combo Reserve Power Standard 3 Circuit Lighting Control Centers, Metal Indoor NEMA 1, 120 VAC Input Supply, 3 SPDT Output Contact
In Stock
$2,569.76
$2,391.99
You Save: 7%

mpn: T930L, ean: 0786261410559,

4.1 out of 5 stars with 57 reviews
This NSi Industries T930-L mechanical time switch and photocontrol accepts 120 VAC input and each of its three circuits can activate a 10 amp load or 1 hp motor. The included remote photocell turns on lighting when the ambient light level drops below...


T900 Series Photoelectric and 7 Day Control Combo Reserve Power Standard 3 Circuit Lighting Control Centers, Metal Indoor/Outdoor NEMA 3, 120 VAC Input Supply, 3 SPDT Output Contact
T900 Series Photoelectric and 7 Day Control Combo Reserve Power Standard 3 Circuit Lighting Control Centers, Metal Indoor/Outdoor NEMA 3, 120 VAC Input Supply, 3 SPDT Output Contact
In Stock
$2,698.25
$2,391.99
You Save: 11%

mpn: T930L-O, ean: 0786261410573,

4.2 out of 5 stars with 22 reviews
This NSi Industries T930-LO mechanical time switch and photocontrol accepts 120 VAC input and each of its three circuits can activate a 10 amp load or 1 hp motor. The included remote photocell turns on lighting when the ambient light level drops belo...


DGU and DGLC Series Lighting Control with Photo/Override Input Control Time Switch, 120/277 VAC 50/60 Hz Input Supply, SPST Output Contact
DGU and DGLC Series Lighting Control with Photo/Override Input Control Time Switch, 120/277 VAC 50/60 Hz Input Supply, SPST Output Contact
In Stock
$126.68

mpn: TRP-U, ean: 0786261820303,

This NSi Industries TRP-U power pack accepts 120/277 VAC input and its SPST output contacts can activate a 20 amp load or 1 hp motor. The power pack is controlled by input from occupancy sensors, on/off switches, and relays. The single-pole single-th...


5000M Series Delayed Response Utility Grade Mov Surge Arrestor Photocontrol, 1800VA Ballast, 1'' Light Sensor, 3470-4620W Power, 480VAC Voltage, Yellow
5000M Series Delayed Response Utility Grade Mov Surge Arrestor Photocontrol, 1800VA Ballast, 1" Light Sensor, 3470-4620W Power, 480VAC Voltage, Yellow
In Stock
$125.68

mpn: 5008M, ean: 0786261610171,

This NSi Industries 5008M photocontrol accepts 480 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 1" cadmium sulphide photocell turns on lighting when the ambien...


T900 Series Photoelectric and 7 Day Control Combo Reserve Power Standard 2 Circuit Lighting Control Centers, Metal Indoor NEMA 1, 120 VAC Input Supply, 2 SPDT Output Contact
T900 Series Photoelectric and 7 Day Control Combo Reserve Power Standard 2 Circuit Lighting Control Centers, Metal Indoor NEMA 1, 120 VAC Input Supply, 2 SPDT Output Contact
In Stock
$2,541.18
$1,392.36
You Save: 45%

mpn: T920L, ean: 0786261410337,

4.9 out of 5 stars with 46 reviews
This NSi Industries T920-L mechanical time switch and photocontrol accepts 120 VAC input and each of its two circuits can activate a 10 amp load or 1 hp motor. The included remote photocell turns on lighting when the ambient light level drops below 1...


T900 Series Photoelectric and 7 Day Control Combo Reserve Power Standard 3 Circuit Lighting Control Centers, Metal Indoor NEMA 1 with Switch Access, 120 VAC Input Supply, 3 SPDT Output Contact
T900 Series Photoelectric and 7 Day Control Combo Reserve Power Standard 3 Circuit Lighting Control Centers, Metal Indoor NEMA 1 with Switch Access, 120 VAC Input Supply, 3 SPDT Output Contact
In Stock
$2,569.76
$289.00
You Save: 89%

mpn: T930L-E, ean: 0786261410566,

4.3 out of 5 stars with 47 reviews
This NSi Industries T930-LE mechanical time switch and photocontrol accepts 120 VAC input and each of its three circuits can activate a 10 amp load or 1 hp motor. The included remote photocell turns on lighting when the ambient light level drops belo...


DGU Series Lighting Control with Photo/Override Input Control Time Switch, Metal Indoor NEMA 1 Enclosure, 120-277 VAC 50/60 Hz Input Supply, SPDT Momentary Output Contact
DGU Series Lighting Control with Photo/Override Input Control Time Switch, Metal Indoor NEMA 1 Enclosure, 120-277 VAC 50/60 Hz Input Supply, SPDT Momentary Output Contact
By NSI
In Stock
$885.12
$758.79
You Save: 14%

mpn: DGUM100A-Y, ean: 0786261822246,

4.7 out of 5 stars with 59 reviews
This NSi Industries DGUM100A-Y digital time switch accepts 120-277 VAC input and its SPDT output contacts provide momentary contact operation (up to two seconds) for mechanically held contactors and low-voltage remote control operations. This timer i...


Lexan Housing with Weatherproof Sealant Photocontrol, 1800VA Ballast, SPST Switch, 2000W Power, 120/277VAC Voltage
Lexan Housing with Weatherproof Sealant Photocontrol, 1800VA Ballast, SPST Switch, 2000W Power, 120/277VAC Voltage
By NSI
In Stock
$143.48

mpn: 2000-7, ean: 0786261600233,

This NSi Industries 2000-7 switch and photocontrol accepts 120/277 VAC input and each of its three circuits can activate a 1,800 ballast for lighting control. The integral photocell turns on lighting when the ambient light level drops below a user-se...


Tork 450337 Tork Advanced 450 Cntr Feed
Tork 450337 Tork Advanced 450 Cntr Feed
By Tork
In Stock
$118.21
Tork Advanced ShopMax Wiper 450 Centerfeed in a Box is highly absorbent offering excellent wipe-dry capabilities. Strong construction offers durability wont tear easily. Self dispensing Pop-Up box offers controlled dispensing. This product contains a...


DGU and DGLC Series Lighting Control with Photo/Override Input Control Time Switch, Accessry Photo Sensor
DGU and DGLC Series Lighting Control with Photo/Override Input Control Time Switch, Accessry Photo Sensor
In Stock
$131.25
$99.95
You Save: 24%

mpn: EPC-A, ean: 0786261821126,

4.2 out of 5 stars with 20 reviews
This NSi Industries EPC-A low-voltage photo sensor is a replacement photocell for use with DGU-A and DGLC-A series time switches. This photo sensor has 1 to 100 foot candle (fc) light sensitivity. The impact-resistant dome and base are ultrasonically...



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