This product has the advantages of convenient installation, just be the host paste on the doorframe Vice Admiral machine paste on the door or window on, auxiliary machine arrow with the host side markers at alignment. When someone illegally opened the door or window (the main vice part of the separation of more than 10mm), the alarm can be issued > 90dB alarm sound, warning the intruder to leave. When you want to open the door, the window can be controlled by the switch. The use of 3 * 1.5vlr44 button batteries (have containing machine).

The alarm device is installed on the door or the window, the thief wants to open the door or window, the alarm will be immediately issued an alarm sound, no time to turn off the switch. Alarm application of magnetic sensing control technology, long service life, easy installation. The use of adhesive stickers, do not need to install, directly paste can be used! Does not damage the household goods! (can be installed in the Internet bar computer chassis, to prevent the theft of computer hardware)

Uses: can be installed on the door and window, there is a switch, when the switch is open, if the doors and windows are opened, it will be issued a loud alarm sound. Sleep at night or at home, not in the office, the alarm switch is opened, can be safe and anti-theft.

Method of use: the alarm is composed of a large and a small, the size of the pieces were placed on both sides of the alarm window two gaps in the middle, large and small size pieces are arranged in parallel, the middle gap as not more than 5 mm (see packaging like paste), small pieces with an arrow, with large the arrow on the opposite direction and parallel to the big stick, anti-theft, close the window, open the alarm switch, if a thief pushed the window, as long as the windows open (i.e., large and small alarm separated more than 5 mm), alarm alarm will sound strong, the house owner will the thieves will be caught immediately, or be defeated and flee.

using LR44 or AG three 13 high quality batteries

rarely leakage.

rarely leakage.