The 507M Tilt Sensor is used to compliment the level of security provide by the existing sensors found on most alarm systems. The tilt sensor detects when the vehicle is being raised in an attempt to remove the wheels or tow the vehicle. The 507M is capable of independently referencing the vehicle's initial angles of inclination each time the vehicle is parked, ensuring the most accurate tilt sensing possible. The sensor control module must be mounted at an angle no greater than 45-degrees, with respect to the horizontal plane of your vehicle, and it must be mounted with the case top face upward. It is recommended mounting the control module to the floor of the vehicle. To mount the control module, fasten the unit with the provided double stick foam tape or screw to secure it in place.