Mbangde Lot of 6 Wired Magnetic Door Contact Personal Alarm Gap Window Door Sensor for Home Security Alarm System DIY Kit

No need external power supply, connect to wired alarm control panel GND and NC ports directly which make signal stability and no trouble for the battery; Operating distance: more than 15mm, less than 25mm; Item need be work with your alarm system, it ca

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SPECIFICATION
Here's how it works

No need external power supply, connect to wired alarm control panel GND and NC ports directly which make signal stability and no trouble for the battery;
Operating distance: more than 15mm, less than 25mm;
Item need be work with your alarm system, it can not be self-employment;
White color make home great and beautiful.
ABS material

Product Description:

Wired magnetic door/windows contact can be added to wireless/wired Alarm Systems.(some wireless system has wired zones).They are best for protecting doors, windows and any other other you want to protect.

Technical Parameters:
Economic solution for Non-metal door/window protection;
No external power supply, connect to wired or wireless alarm control panel GND and N.C or N.O ports directly!
ABS material;
Alarm distance: 15mm-30mm

Magnetically triggered alarm are used to guard the opening of both doors and windows.
Peel and stick the alarm to every entrance to make sure your home is protected. With high reliability, frequency stability, low consumption, strong penetrating power and other characteristics.
Can help you focus on your child whether to open the windows and doors or cabinet ensure the safety of children.
If a burglar opens the protected door or window, a magnetic switch inside the sensor, will trip, which sets off the security system. Super loud alarm of 100dB, scare thief away.
Includes 12x LR 44/AG 13 button cell batteries.(3pcs for each alarm device).