About This Prevent Unwanted Intruders: Door handle alarm is practical, when actived by vibration or touching, it will trigger and make extremely loud 120dB alarm sound that notifies neighbors and frightens thieve away, protect you and your belongings Easy to Install: Vibration alarm requires no wiring. Just hang it on the inside door knob, turn on the switch, you can carry it with you and use it in hotel, dormitories, and rental rooms Convenient in Using: Door vibration alarm is powered by 3 AAA batteries. just insert the batteries (not included) into the alarm, turn it on with the switch on the side, and hang the alarm on the inside of the door or window handle Two Modes: Door alarm has 2 modes: alarm mode and doorbell mode, you can use the button on the back to switch between them Wide Application: Door entry alarm is suitable for various kinds of doors and windows with handles or knobs, applied in dormitories, hotels, shops, warehouses and many other places Overview Color : White Brand : BORDSTRACT Power Source : Battery Powered Compatible Devices : Home Security System Battery Description : Disposable
