Helping Hand Wireless Door Chime/Alarm
Piercing 90dB Alarm. Secure your home or office with an alert chime or alarm. Simple installation with double-sided adhesive tape (included), no wiring. Batteries included. Contains: 1alarm. Alarm/chime sounds when magnetic contact is broken. Chime sounds when door is opened. Keep track of children and elderly. 3-LR44 batteries (included). Check batteries often. Made in China.