PS : Not all the door sensor can work with your alarm system,please let me know what kind of alarm system in your hand before you order. It must work wit the alarm system.

Function:

Power Supply: DC12V (inner 7.4V battery)

Static Current::

Product Features

• Easy to install–just peel and stick
• Magnetic sensor switch detects entry protecting your home or office
• Built-in omnidirectional antenna, Superior circuit design, High-performance and low power consumption.
• Superior circuit design. High-performance and low power consumption.
• Compound multi-layer design. Built-in omnidirectional antenna. NOTICE: It has been insulated when bale the item. After receive the item, need remove insulation paper by the side of the battery before use.