> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# 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

## How to buy

- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## 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)