OWSOO 433MHz Wireless Magnetic Door Window Sensor Detector Suitable for Home Security Alarm System

Overview: This item uses mini shape design, you can simply attach one piece to your door or window, and attach the other piece to the door or window frame. The alarm stops when the two parts recombined, but activated when the two pieces are separated. So it is an ideal entry warning for homes, apartments, mobile homes, dorms, offices, garages, and more.Features: *433MHz frequency,wireless transmission is more than or equal to 100 meters in open place. *Simply attach one piece to your door or window, and attach the other piece to the door or window frame. *Low-consumption design,which can makes it work long time. *Installation with double-side adhesive,easier to install. *Ideal entry warning for homes, apartments, mobile homes, dorms, offices, hotel rooms, garages, and more. *Excellent design,tiny and fashion.Specifications: Working Voltage: DC 3V Back-up battery: 1* 3V CR2450(included) Frequency: 433MHz Emission protocol: 1527 Static Current: