Advanced AntiTheft Protection: A sensitivity probe and microcomputer control detect unauthorized movement. When motion is detected, the system triggers a loud 110 dB alarm to deter theft and help protect your bicycle. Loud Alarm System: The 110 decibel alert is designed to grab attention and deter potential thieves while notifying nearby people of tampering attempts, providing reliable audible protection. Simple Installation: Designed for general bicycle use, the unit mounts quickly without tools onto most bike frames using a versatile mounting bracket, making security setup straightforward. Sturdy WeatherResistant Construction: Built with a quality metal housing and plastic components, the unit measures 10 x 6 x 4 cm. It withstands outdoor elements and is designed for long lasting performance in various weather conditions. Key benefits and what it solves: Provides proactive theft deterrence through immediate audible alert, ensures quick and tool mounting on common bike frames, and offers durable operation outdoors. Its compact size and solid construction help you secure your bike without major setup or maintenance. Compatibility and performance: Works with most bicycle frames via the included versatile mounting bracket. The sensitivity probe and microcomputer control deliver responsive protection, with a consistent 110 dB alarm for effective deterrence. Size and materials: Compact 10 cm by 6 cm by 4 cm metal housing with plastic components, designed for durability and weather resistance. Use scenarios: 1) City commute: Park your bike at a station or office, mount quickly with no tools, and rely on the audible alarm to deter theft while you are away briefly. 2) Coffee or park stop: Leave your bike for a short time; the system provides immediate audible alerts to deter tampering and draw attention from nearby people. 3) Outdoor storage and longer stops: Weatherresistant construction ensures continued protection when bikes are parked outside for extended periods.