1. Products have main unit and magnet strip.

2. Tear off the back sticker,put the main unit and magnet strip on the door or window. When the door is opened, magnet strip away from the unit, item emit 125dB alarm,and the red warning light will flash;Close the door will stop alarm and light turn off.

3. With low voltage indicator to warn user to change the 2AAAbattery.

4. Easily mounted by stickers to windows or door and popular use in office and home.

Size：95.5MM*43MM*19.5MM

Magnet Size：33*12*11mm

Weight：35.5g

Material：ABS

Battery：AAA battery*2pcs

Working voltage：3V

Working time：10 hours

Working temperature：-20～70℃ 

OPERATION:

Slide the switch to “ON” to open the device,When the door is opened, magnet strip away from the unit, item emit 125dB alarm,and the red warning light will flash;Close the door will stop alarm and light turn off.

BATTERY INSTALLATION:

Item not including batteries,please put batteries before use.Remove the front cover to install 2AAA batteries.

With low voltage indicator to warn user to change battery it there is no powe