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.
Red wire is power (12V). Brown wire is GND. Black wire is open collector Alarm.
This unit works great from 5 to 12V (datasheet shows 12V). You can also
install a jumper wire past the 5V regulator on board to make this unit
work at 3.3V. Sensor uses 1.6mA@3.3V.We have some users with problems when the sensor is powered with 5V, please use 12V as power source.
The alarm pin is an open collector
meaning you will need a pull up resistor on the alarm pin. The open
drain setup allows multiple motion sensors to be connected on a single
input pin. If any of the motion sensors go off, the input pin will be
The connector is slightly odd but has a 0.1" pitch female connector
making it compatible with jumper wires and 0.1" male headers.