Features: This is a versatile sound and light alarm. The shrapnel squeeze induction alarm is more reliable than the ordinary door magnetic alarm physical method. You can insert it into the interspace of a door or window, and when the door and window are removed, it will alarm. There are many functions, it can be used not only for doors and windows, but also for wallets, wallets, drawers, etc. Powered by a 9V battery, you can buy it in a regular store. There is a black mouthpiece in the accessory, which is used to stop the alarm, please keep it. Specifications: Condition: Brand New Material: ABS Color: Black Working voltage: 9 (V) Alarm current: 80 (mA) Type : Other alarm detector Installation method: Mounted Alarm tone: 130 decibels Lighting method: LED light Weight: Approx.88g/3.1oz Package List: 1 * Alarm 1 * Connection Line 1 * Manual 1、This is a versatile sound and light alarm.The shrapnel squeeze induction alarm is more reliable than the ordinary door magnetic alarm physical method. 2、Powered by a 9V battery, you can buy it in a regular store. 3、You can insert it into the interspace of a door or window, and when the door and window are removed, it will alarm. 4、There are many functions, it can be used not only for doors and windows, but also for wallets, wallets, drawers, etc. 5、There is a black mouthpiece in the accessory, which is used to stop the alarm, please keep it.