When a person walks past the sensor, it detects a rapid change of infrared energy and sends a signal. PIR sensors are used ... THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction ...

Get close enough to this raven and you’ll set off the PIR sensor, which triggers lighting and sound effects, including some spooky glowing and blinking red eyes, general cawing, and of course ...

Wave Sensors Can Track Multiple People . mmWave stands for millimeter wave and describes the wavelengths of the radio waves that are used by these sensors, which are small enoug ...