Wireless Alarm Lock Bicycle Security System With Remote Control Anti-theftFeatures:Perfect for protecting your shop, office, home, car, house or anywhere requiring protectionWireless vibration alarm with infrared remote controlOnly the user can unlock the alarmIt helps to protect your bicycle well, and you don't have 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 control: powered by 1x L828 battery (included)Dynamic current: 105dbWorking temperature: -15~75Storage temperature: -40~85 Environmental humidity level: 5%~98%Color: BlackAlarm size: approx 9.5 x 6 x 3.8cmUsage method: Press the red button A, the fortification will beep; press the button B to cancel gray, theft will beep twice.Package included:1pc x Vibration Alarm (Battery is NOT included.)1pc x Remote Control4pcs x Screws2pcs x Screw capsNote:Waterproof, but do not immerse the product in waterAlkaline 9V battery is recommended to use. (If it is cold winter, cold resistance battery is recommended to use.)Replace the battery when the alarm sound becomes lowerTake out the battery when not using the alarm for a long time to avoid damage due to leaking fluid.Please allow 0.5-1cm measuring deviation due to manual measurement.