It is great for microcontrollers such as Arduino, Funduino, and many more, including the Raspberry Pi!
It is an HC-SR501 Sensor Module
With an operating voltage of 5V to 20V
Operating voltage. It has a high value of 3.3 volts and a low of 0 (it is either on or off). Its delay time can be adjusted from 5 to 200 seconds, as well as the sensing range from 3 meters to 7 meters. The entire sensor with the board is 32mm by 24mm (standard PIR motion sensor). The sensor either gives off a 3.3-volt high value when motion is detected and then resumes or continues to give off a 0-volt value when no motion is detected. If you use an Arduino or other microcontrollers, you can use the 3.3-volt output to power the sensor or use the 5-volt power pin (VCC) to power the sensor. Either one will work.


Working voltage range: DC 4.5-20V
Static current: <50uA
High level output: 3.3 V / low 0V
Trigger mode: L unrepeatable trigger /H repeated trigger (Default Repeating trigger)
Delay time: 0.5-200S (adjustable) can be produced in the range of 0.1 seconds to a few minutes
Blocking time: 2.5S (the default) can be produced in the range of 0.1 seconds to tens of seconds
Size: 32mm*24mm circuit board
Induction angle: <100 degree cone angle
Working temperature: -15-+70 degrees
Induction lens size: diameter: 23mm (default)