Anchtek Anti-Theft Bicycle Alarm Waterproof Wireless Remote Control Alarm Vibration Sensor Alarm Moto Warning System -- Anchtek Anti-Theft Bicycle Alarm Waterproof Wireless Remote Control Alarm Vibration Sensor Warning System for Car Motorcycle Bicycle Features The volume is three levels: high, medium and low. The factory default value is the highest sensitivity and maximum volume. Touch sensitivity which has seven levels from high to low, with seven tones to Le Mi FA, so La Si sound effect.113dB high volume, hidden parts installation can also effectively deter thieves! Bicycles, motorcycles, doors and windows, vibration alarm, more accurate theft identification. IP55 waterproof (don't be afraid to use in rainy days). Turn on the SOS help function and the help prompt signal will be automatically sent in case of an accident while driving for multiple guarantees. Remote control distance: 0-66 feet (20 meters). Find your car conveniently and easily.Installation1. Apply the adhesive tape.2. Install cable tie.3. It was attached to the clean position.4. Install it with cable.5. Cutting off excess cable.6. Ready to use Technical specifications: Alarm requires 3 AAA alkaline batteries (included) for standby for 6-10 months Remote control needs 12V/27A alkaline battery (included) for more than 1 year Wireless range: 10-20 meters Ambient temperature during operation: -20 ~ 60 degrees, working environment: 80% Storage temperature: -30 ~ 70 degrees Note 1. The alarm needs 3 AAA alkaline batteries (including) to standby for 6-10 months.2. The remote control needs 12V/27A alkaline battery (incl.) for more than 1 year.3. It is better not to install the host in a closed space surrounded by metal, which has a great impact on the wireless signal shielding and affects the remote control distance.