Get peace-of-mind with a high-tech security system designed just for Harley-Davidson motorcycles. Multiple sensors detect ignition tampering and contact with the bike. The system is all-electronic with no moving parts, and all sensors and circuits are vibration hardened to handle the requirements imposed by life on a motorcycle. Engineered using the latest circuit designs and components, the unit has ultra-low battery draw (.003 mA) and is weather resistant. Wiring is a snap with factory connectors which means there are no wires to cut. 129 decibel high-output siren for 100, 200 or 300 series (size approx. 4'' x 4'').