HC-SR501 Pyroelectric Infrared PIR Motion Sensor Module.

Specifications:

1) Passive Infrared Sensor Modules
2) Infrared sensor with control circuit board
3) The sensitivity and holding time can be adjusted
4) Detecting Range: Approx. 7m / 23 feet
5) Detecting Angle: Less than 100 degrees
6) Working Voltage Range: DC 5V- 20V
7) Quiescent Current: Less than 50uA
8) Level Output Voltage: High 3V / Low 0V
9) Working Temperature: -15 to +70 degrees C
10) Trigger Method: L unrepeatable trigger / H repeatable trigger
11) PCB Size: Approx. 32mm x 24mm / 1.3 x 0.9 inch