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This is a very small light sensor. A photocell changes (also called a photodetector, photo resistor, CdS or photoconductive cell) resistance depending on the amount of light it is exposed to. These little sensors make great ambient light triggers (when light in the room turns on, do something).


  • Light resistance : ~1k Ohm
  • Dark resistance : ~10k Ohm
  • Max voltage : 150V
  • Max power: 100mW


  • 2 x 4 x 5mm
  • 4mm between pins
  • 31mm lead length

Mini Photocell [SEN-09088]

  • Brand: Sparkfun
  • Product Code: SPARKFUN-SEN09088
  • Reward Points: 2
  • Availability: 3
  • £3.02

  • Ex Tax: £2.52
  • Price in reward points: 100

Photo cell (CdS photoresistor) [161]

Photo cell (CdS photoresistor) [161]


CdS cells are little light sensors

Qty: 4

Photo Transistor Light Sensor [2831]

Photo Transistor Light Sensor [2831]


This Photo Transistor Light Sensor is a simple sensor that detects ambient light

Out Of Stock