509U Ultrasonic Interior Sensor

The Ultrasonic Interior Sensor is used to
provide coverage of a vehicle's interior cabin
area. The sensors detect movement inside the
vehicle by sensing air disturbance. They should
trigger the alarm if a thief has gained access to
the interior of your vehicle. Fully adjustable.

Includes enough cable for the sensors to mount
on the driver and passenger front A pillars with
mounting hardware.