HC-SR501 PIR Motion Detection Sensor
Waveshare Sensors Pack Tens of Different Sensors in One Pack.
Gravity: Digital Microwave Sensor (Motion Detection)The microwave sensor applies the Doppler effect to detect moving objects using microwaves.
Gravity: Digital PIR (Motion) Sensor For ArduinoPIR sensors allow you to sense motion, almost always used to detect whether a human has moved in or out of the sensors range.
Mini PIR Motion Detector 12Vdc This is a simple and complete to use motion sensor.
PIR Motion Sensor Module Highly integrated module popularly used for entry detection, it complies with microcontroller or DC loads.
PIR Motion Sensor (JST) This is a simple to use motion sensor. Power it up and wait 1-2 seconds for the sensor to get a snapshot of the still room. If anything moves after that period, the ‘alarm’ pin will go low.