Strauss Bicycle Wireless Security Alarm Lock |Anti-Theft Lock with Audible Alarm |Waterproof | Keyless Entry |Vibration Sensor |Theft Prevention | Comes with Remote Control |Cycling Accessories Wireless Vibration Alarm with infrared remote control,Only the user can unlock the alarm,It helps protect your bicycle well, and you don't need to worry about losing it The vibrating sensor system, when the bicycle shake or vibrate, the alarm will release ultra strong alert sounds for about 20 seconds, good bicycle security anti-theft tool. Effective remote control and alarm sensors 10m above the terminal, open area up to 30m,Super loud, simple to operate and easy to install Alarm: powered by 1x 6F22 9V battery,Remote controller: powered by 1x L828 battery,Dynamic current: 105db,Work temperature: -15~75,Store temperature: -40~85 Environment humidity level: 5%~98%,Alarm size: approx. 9.5 x 6 x 3.8cm.Note-Battery Not Included