Simple to operate and easy to install. Perfect to protect your shop, office, home, car, house or anywhere requiring protection. Only the user can unlock the alarm. Super loud, simple, easy to theft. Wireless Vibration Alarm with infra-red remote control. It helps protect your bicycle well, and you don't need to worry about losing it. Effective remote control and alarm sensors 10 meters above the terminal, open area up to 30 meters. Alarm: powered by 1x 6F22 9V battery (not included) Remote controller: powered by 1x L828 battery(included) Dynamic current: 105db Work temperature: -15 Celsius~75 Celsius Store temperature: -40 Celsius~85 Celsius Environment humidity level: 5%~98% Color: Black Alarm Size:9.5x6x3.8cm() Using : Press the red button A, fortification will beep; press the B button to cancel the gray, theft will beep twice. Note: 1. Waterproof, but do not immerse the product into water. 2. Alkaline 9V battery is recommended to use. (If in cold winter, cold resistance battery is recommended to use.) 3. Please replace the battery once the alarm sound becomes lower. 4. Please take out the battery when not using the alarm for a long time to avoid any damage due to the leak liquid. Note: Battery is not included. cPackage include 1 x Vibration Alarm 1 x Remote Controller 4 x Screws 1 x Screw Cap Note:Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.