Wireless Alarm Lock Bicycle Bike Security System With Remote Control Anti-TheftFeatures:Perfect to protect your shop, office, home, car, house or anywhere requiring protectionWireless Vibration Alarm with infra-red remote controlOnly the user can unlock the alarmIt helps protect your bicycle well, and you don't need to worry about losing itEffective remote control and alarm sensors 10m above the terminal, open area up to 30mSuper loud, simple to operate and easy to installSpecification:100% brand newAlarm: powered by 1x 6F22 9V battery (NOT included)Remote controller: powered by 1x L828 battery (Included)Dynamic current: 105dbWork temperature: -15~75Store temperature: -40~85Environment humidity level: 5%~98%Color: BlackAlarm size: approx. 9.5 x 6 x 3.8cmUsing method: Press the red button A, fortification will beep; press the B button to cancel the gray, theft will beep twice.Package included:1pc x Vibration Alarm (Battery is NOT included.)1pc x Remote Controller4pcs x Screws2pcs x Screw CapsNote:Waterproof, but do not imerse the product into waterAlkaline 9V battery is recommened to use. (If in cold winter, cold resistance battery is recmmended to use.)Please replace the battery once the alarm sound becomes lowerPlease take out the battery when not using the alarm for a long time to avoid any damage due to the leak liquid.Please allow 0.5-1cm measuring deviation due to manual measurement.