# Photoresistor

**Type:** Product page · **SKU:** SEN-09088 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/mini-photocell-8807.html ([markdown](https://core-electronics.com.au/mini-photocell-8807.html.md))

## Retired product

This product is retired and no longer available for purchase. Replaced by: CE09439.

**Replacement:** https://core-electronics.com.au/catalog/product/view/sku/CE09439

## Description

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).

**Features:**

- Light resistance (10 Lux @ 25°C) : 8~20k Ohm
- Dark resistance (0 Lux, 10 seconds after pulsed 10 Lux) : ~1M Ohm (min)
- Max voltage (@ 25°C) : 150V
- Max power (@ 25°C): 100mW
 
**Dimensions:**

- 2 x 4 x 5mm
- 4mm between pins
- 31mm lead length
 
**Documents:**

- [Datasheet](https://core-electronics.com.au/attachments/localcontent/SEN-09088_58875597f9b.pdf)
- Bildr Tutorial

## Guides for this product

- [Light Sensing with an LDR and Pycom](https://core-electronics.com.au/guides/pycom/sensing-light-with-ldr-and-pycom-lopy4/)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/m/i/mini_photocell__sen-09088__01.jpg)