Published by xia, CrystalDec 18,2018

Active infrared radiation detector and its application de...

The active infrared radiation detector consists of two parts: receiving and transmitting. The inf...

Published by xia, CrystalOct 30,2018

Infrared alarm principle, function and installation method

The infrared alarm can detect the infrared rays emitted by the human body, and is composed of an ...