12V DC Human Body Motion Sensor Module Switch Board Sensor

This human body motion sensor module work on detecting, human body will emit a special ray and this product will detect it and functions.
This product has a good capacity of resistant disturbtances, such as lights, electromagnetic waves and little animals, etc.
Small size(45 x 30 x 20mm), which can save your space.
Easy to install, and easy to use.
Notes: sensor should be installed 2~2.2m from the ground and be far away from fridge and fire applications.