# Light sensor, photoresistor

> Light sensor with photoresistor for measuring light intensity, compatible with Arduino. Detects the presence of light, with a switching threshold adjustable via potentiometer. Operating voltage 3.3V-5V, fast response and easy integration on development boards. Suitable for automatic lighting, alarms or light control.

- Page: https://sigmanortec.ro/en/light-sensor-photoresistor
- Price: 3.42 RON
- Availability: In stock; 1-2 zile
- Reference: 22018 · EAN: 5941804918601
- Category: Mechatronics and IoT > Sensors and Modules > Light and Optical Sensors
- Package (shipping data): 0.003 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 03:25 (Europe/Bucharest)

## Description

Photoresistor for measuring light intensity in Arduino projects and simple automation, detects the presence of light and switches at the desired threshold adjustable from the potentiometer, operates at 3.3V to 5V, offers fast response and easy integration on development boards, ideal for automatic ignition, alarms or lighting control.
Photoresistor sensor for detecting light intensity, compatible with Arduino. This sensor detects the presence of light, the threshold of which can be set from the potentiometer
Working voltage 3.3V-5V