Wireless Sensor Door Window magnetic Alarm

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. The magnet is located on the right side,keep the arrows parallel between the main machine and magnetic stripe.
When the door is opened, magnet strip away from the unit, item emit 125dB alarm.
3.With low voltage indicator to warn user to change the battery.Remove the front cover to install 2AAA batteries.

[csluwang]

Hello bro does it work on other types like iron door or almirahh door