A motion detector is a device that detects moving objects, particularly people. A motion detector is often integrated as a component of a system that automatically performs a task or alerts a user of motion in an area. Motion detectors form a vital component of security, automated lighting control, home control, energy efficiency, and other useful systems.
Tom Clancy's Rainbow Six: Vegas 2
The Motion Sensor is a gadget featured in Tom Clancy's Rainbow Six: Vegas 2.
Upon successful placement, a laser tripwire is deployed. When tripped by enemy players, their position is alerted by all teammates by a notable chime. Sensors can be destroyed with either gunfire or explosives.