PIR Sensors


What is a PIR Sensor?

A PIR sensor (Passive Infrared sensor) is a motion detection device used to sense movement of people, animals, or objects by detecting infrared radiation (heat) in its environment. Commonly used in security systems, automatic lighting, and smart home devices, PIR sensors are energy-efficient and cost-effective. Unlike active sensors, PIR sensors don't emit any signals—they simply detect infrared energy changes caused by moving heat sources. This makes them ideal for motion-activated systems where reliability and low power consumption are crucial. Whether you're building a DIY home automation project or installing commercial motion detectors, PIR sensors offer accurate and passive motion detection.

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Indoor Sensors

£24.99
 per 
 PIR Sensor for WiZ Connected bulbs  Control lighting automatically  Can be controlled via the WiZ App  Ideal for security and energy saving  Powered by 2x AA batteries (not included)

Outdoor Sensors

£29.99
 per 
 PIR sensing technology to detect motion  Compatible with the complete 4lite WiZ Connected range  IP65 polycarbonate body for outdoor use  Battery operated  Requires 2 x AA batteries (not supplied)

FAQ

What does a PIR sensor detect?


A PIR sensor detects infrared radiation (heat) emitted by living beings, such as humans and animals. It senses changes in heat levels when someone moves in its detection range.

Can PIR sensors detect motion through glass or walls?


No, PIR sensors cannot detect through glass, walls, or solid objects, since infrared radiation doesn’t pass through these materials effectively.