Simple to operate and easy to install Only the user can unlock the alarm It adopts microcomputer technique having high sensitivity for you Wireless Vibration Alarm with infrared remote control Super loud simple easy to Antitheft It helps protect your bicycle well and you dont need to worry about losing it Effective remote control and alarm sensors 10 meters above the terminal open area up to 30 meters Low power consumption to allow the battery a long life Easy to installation and DIY Waterproof but do not immerse the product into water Recommend use alkaline 9V battery If in cold winter recommend use cold resistance battery Please replace batter once the alarm sound lower Material Plastic Package Included 1 x Vibration Alarm 1 x Remote Controller 2 x Screw sets Batteries Not Included