Home Wireless System Security Device Door Window Burglar Alarm

Features:Easily mounted by adhesive tape on window or door.The magnetic sensor detects the entrance protecting your home or office whether you are there or not.Warning door/window sticker is provided free of charge in the packaging.Powered by 2 batteries (not included)
Specification:Open the battery cover, match the positive and negative signs and Insert2 triple A batteries correctly, close the battery coverAttach the main unit which has the on-off switch to the side of the door and window.Attach the bar magnet to the door/window frame with the arrow aligning with the reference line of the main unit.Switch the main unit to "ON" position so as to be in alert state, it will give 90bp alarm if the magnetic sensor has been separated from the alarm device when someone opens the door/window.Please turn off the switch when you don't needRemove the batteries to extend the life of the product/batteries if it will be stored for a long time
Specifications:Wireless Door Window Burglar Alarm Home Security Wireless Longer System Security Device
Package Included:1 x Alarm Unit1 x Magnetic Sensor