Features:
Installation method: magnetic control

Alarm sound 130 decibels

3pcs 1.5V LR44 batteries

Prevents unauthorized entrances. The alarm goes off when thieves or strangers open the door or window without authorization.

Use range:
This product is easy to install.
Simply attach the main and auxiliary parts to the cover and chassis, or the two windows, and align them (left 5 mm gap). When someone accidentally hits the case or window (the main and auxiliary parts are separated), the alarm can sound a strong alarm to warn the intruder to leave. When you want to open the case, door and window, you can control it by a switch.
Applicable to Internet cafes, anti-theft of residential buildings, offices, store counters, etc.
Built-in 130db alarm output, using 3 ? 1.5V LR44 button battery (included in the machine)
product manual:

The product is small and portable, easy to install, and the double-sided adhesive tape is easy to install on the door or window. It is a cheap, economical but useful preventive measure.
Simply attach the main and auxiliary parts to the door and door frame, or to the two windows, and align them (left 5 mm gap). Once the thief slams the door/window, attempts to steal (the main and auxiliary parts are separated), the alarm will sounding in a strong alarm, scare off the thief. Remind the owner that somebody break in .

Turn OFF the alarm by the switch when you open door/window
It is suitable for theft prevention of houses, offices, store counters, etc.

Installation method:

1. Fix the main unit to the door/window with double-sided tape.
2. Attach another strip of door magnet to the door frame in a straight line along the main line.(test the door magnet position before fix it)
3. When checking the settings, turn the main unit switch to the “ON” position.
4. Open the door and test the alarming works good or not

Package Weight: 42g

Package Dimensions: 9cm x 14cm x 1cm

Package Includes:
1 x Alarm
1 x Magnetic Stripe