The Directed 507M Digital Tilt Sensor for Car Alarm is a new solid state, ultra-sensitive miniature digital tilt sensor that can be integrated with most security systems to detect lifting or towing of your vehicle. The preferred enhancement to protect expensive wheels and tires, it can also detect attempts to steal the vehicle using a tow truck or trailer. The 507M Digital Tilt/Motion Sensor is used to compliment the level of security provided by the shock sensors found on most alarm systems. The tilt/motion sensor detects when the vehicle is being raised in an attempt to either remove the wheels/tires or tow the vehicle. The 507M is capable of independently referencing the vehicle's initial angles of vertical and horizontal inclination each time the vehicle is parked, ensuring the most accurate tilt (vertical) and motion sensing (horizontal) possible. This unit is compatible with all alarm systems.