Wireless Alarm Lock Bike Security System with Remote Control Anti-Theft Wireless Alarm Lock Bike Security System with Remote Control Anti-Theft Features: Perfect for protecting your shop, office, home, car, house or anywhere that requires protection Wireless vibration alarm with infrared remote control Only the user can unlock the alarm It helps protect your bike well, and you don't have to worry about losing it Effective remote control and alarm sensors 10m above the terminal, open area up to 30m Super loud, easy to use and easy to install Specification: 100% brand new Alarm: powered by 1x 6F22 9V battery (not included) Remote control: powered by 1x L828 battery (included) Dynamic current: 105db Working temperature: -15~75 Storage temperature: -40~85 Environmental humidity level: 5%~98% Color: Black Alarm size: about 9.5 x 6 x 3.8 cm Usage method: Press the red button A, the fortification will beep; press the gray button B to cancel, the theft will beep twice. Package included: 1pc x vibration alarm (battery not included.) 1pc x remote control 4pcs x screws 2pcs x screw cap Note: Waterproof, but do not immerse the product in water Alkaline 9V battery is recommended to use. (If it is cold winter, it is recommended to use batteries with cold resistance.) Replace the battery when the alarm sound becomes lower Take out the battery when you do not use the alarm for a long time to avoid damage due to leaking liquid. Please allow 0.5-1cm measurement deviation due to manual measurement.