Features:
- Super loud 90 dB alarm
- 100% brand new alarm for window or door
- Compact design, no wiring required
- Magnetism control design with steady capability
- High sensitivity can be used to protect people against stealing
- Easily mounted to windows or doors with included double-side adhesive tape
- Electronic magnetic Sensor detects entry
- Alarm is activated when the two pieces are separated
- Turn the switch to ON it sets up defense
- When someone enters or opens a door, it will send out loud voice to frighten him and warn the master
- Ideal choice to guard against thefts in house, schools, offices, and some other places
- Powered by 3 pcs 1.5V LR44 button cell
