PIR Motion sensor module (Adjustable Range) RS232 Signal Booster Can also be used for

Can also be used for impact sensing or a flexible switch

30mm long x 21mm outer diameter x 12mm inner diameter

Frequency Range: 2

It is very accurate

Water flow rate on LCD

PIR Motion sensor module (Adjustable Range) RS232 Signal Booster Can also be used forPIR "Passive Infrared"sensors allow you to sense motion, almost always used to detect whether a human has moved in or out of the sensors range. How to Use PIR Sensor The PIR sensor have 3 pins: Power: 3 5 VDC Output: High (when motion detected) Low (no motion detected) Ground: connected to ground The output pin will go "high" to 3. 3V and light up the LED when motion detected. Specifications: Input Voltage: DC 3 5V Output signal: 3. 3V (motion