Diitao 6PCS AM312 Mini Human Sensor Module, HC-SR312 Pyroelectric Infrared PIR Motion Automatic Detector DC 2.7 to 12V with 10pin Wire for Arduino Diitao 2 ratings View Product Buy it on Amazon ...

There’s a huge market for 433 MHz alarm system hardware out there, from PIR motion detectors to door and window sensors. If you want to put them to work, all you need is a receiver, a network… ...