Function introduction of door magnetic alarm:

 ● prevent burglars from calling the police when they open a door or window

 Installation method: magnetic control

 ● alarm sounds 90 decibels

 ● use 3 1.5-v batteries

Scope of use:1. Doors, Windows, families, shops, businesses and other wide places 2. Internet cafe computer case alarm this product is easy to install, just paste the main and secondary parts on the case cover and case, or two Windows, and align (leaving a gap of about 5 mm). When someone illegally dials the case or window (the primary and secondary parts are separated), the alarm can send out a strong alarm to warn the intruder to leave. When you want to boot the box, the door, the window, can be controlled by the switch. Applicable to Internet cafes, residential houses, offices, shops counter security. Built-in 90db alarm output using 3 x 1.5v LR44 button battery (included)

Product description:The product is small and exquisite, easy to install. The double-sided adhesive tape is easy to install on the door or window. It is a kind of economical and practical technical preventive measure. In our local, has been fully recognized by the residents, the police. Simply paste the main accessory on the door and frame, or on both Windows, and align (leaving a gap of about 5 mm). Once the thief pry the door, pry the window, attempt to steal (the main accessory is separated), alarm can send out a strong alarm sound, frighten off the thief, remind the owner and the people around to catch the thief. Oneself want to open a door, window, can be controlled by the switch. Applicable to the residence, office, shop counter security.

 Installation method:

1. Secure the mainframe to the door/window with double-sided tape.

 2. Glue another door bar magnet to the door frame in a straight line along the host prompt line.

3. When checking the Settings, switch the host to the \"ON\" position.

 4. Open the door and see if the alarm goes off.