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. Item Informatiom
Features: New and high quality Super loud 90 dB alarm Convenience in installation–just peel and stick Super environmental suitability and stability Dustproof and insect prevention Easily mounted by
his economical alarm inconspicuously protects your home from intruders. This unit uses a magnetic sensor to detect the opening of a protected door or window. A 90 dB alarm