You can use an LED as a light source, sure, but did you know you can use one as a sensor? Dual-Use Devices The concept of using an LED as a sensor is much like using a speaker as a microphone.

If you want to fully enjoy the benefits offered by sensor lights, then you have to consider a few basic things before investing in LED sensor technology.

The PIR LED light security circuit can be powered from a compact 9V rechargeable battery. Note that the battery charger circuit is not included with the circuit schematic. You can use any suitable ...

This weather-ready outdoor sensor from Philips Hue tracks motion, temperature and ambient light. It can trigger your lights and gadgets accordingly.

Enabled for 125 msec, Count 8 counts the cycles exiting the light sensor. The circuit senses the light by biasing the LED and current-limiting resistor such that the cathode lead of the LED is at ...

LEPOTEC 30-LED Motion Sensor Cabinet Light Amazon Brightening up your bedroom is as easy as sticking this ultra-bright light on your wall.