IcoolGadgets 2019 Door Window Sensor Wireless 

Descriptions:
Open the battery cover,Match positive and negative signs and Insert2 triple A batteries correctly, close the battery cover

Fix the main unit which has on-off switch at the side of the door&window.

Attach the bar magnet to door fram/window frame with the arrow aligning with the referenc line of the main unit.

Switch to"ON" position of the main unit so as to be in alert state,it will give an 90bp alarm if the magnetic senor has been separated fron the alarm device when someone opens the door/window.

Please turn off the switch when you don't need

Remove the batteries to prolong the lifetime of the product/batteries if it will be set aside for a long time



Features:
Easily mounted by adhesive tape to window or door.

Magnetic sensor switch detects entry protecting your home or office whether you are in or out.

Warning door/window sticker is supplied free in package.

Operating by 2xbatteries(not includ)

Package includes:
1 x Alarm Unit
1 x Magnetic Sensor

Tips:
1.The rang non-stop or does not ring: (the reason is the alarm is shocked by the way, resulting in the inside of the iron clutch is not very sensitive, but the probability is very small) you can shake the alarm host, and repeat near, separated from the host and auxiliary machines for several times, and observe the switch whether intact, also you can knock the host and auxiliary machines.

2. If the voice is small, it because the electric ran on the way, change the battery is OK.

if it still can not use may be the the electric wire is broken on the way ,but it is almost impossible

3. If you can not solve, please call or contact the servier.