1. Magnetic door alarm, Installed directly on doors and windows, it is easy just peel and stick. Also small size.
2. Alarm is activated when the two pieces are separated, 3. Use "ON", "OFF" control the alarm or disarm.
4. Protect people against stealing, High sensitivity.
5. Give an alarm if intruder open the door or windows.
6. Suitable for homes, mobile homes, dorms, offices, hotel, room, garages and so on.

Technical parameter:
1. Power supply: 3PCS 1.5VLR44/AG13 button cells(batteries included)
2. Quiescent current: 3-6uA
3. Temperature: -10-+50° C
4. Alarm decibel: 90dB