2 Lithium Metal batteries required. (included)
Lewis N Clark Travel Door Alarm + Window Guard Portable Home Security System Battery Operated for Hotel, Bedroom…
Make sure this fitsby entering your model number. LOUD + ATTENTION GRABBING: High pitched 91 dB sounds when the home alarm is triggered. Loud enough to alert your neighbors, wake you up, and deter would-be thieves MAXIMUM SECURITY + VERSATILITY: Stay safe at home and while you travel. Perfect alarm system for front door, bedroom, apartment, dorm, or hotel. Can also use in windows.