Features : 1)3 Levels Adjustable Volume, from 96dB, 105 dB to 113dB 2)7 Levels Adjustable Sensitivity,from gently touch to push or beat 3)IP55 Waterproof and Durable 4)Search Function,alarm make sounds when you press the ringtone key 5)SOS Function,The alarm will automatically alarm for calling help when your bicycle tilts more than 45 degrees 6)Multi-Purpose Vibration triggered alarm suitable for Bikes, Electric Bike, Motorcycles, Scooter, Car, Trailer, Luggage, Doors and Windows 7)DIY pairing:1 Host Alarm Can Pair with uo to 8 Remote Control Specifications: Condition: 100% Brand New Shell Material: PC Alarm volume: 113dB (Test distance is 30cm) Remote control distance: 30~60m (98~196ft) Working frequency: 433.92MHz Working temperature: -20~60℃ Humidity: <80% Storage temperature: -30℃.