KERUI Wireless Home Doors Windows Security Entry Alarm System - EASY to install FREE BATTIRES Door Sensor for GSM Home Security Alarm System

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
Compound multi-layer design
Built-in omnidirectional antenna
Superior circuit design
High-performance and low power consumption
Superior ABS material
Working frequency:433MHz
Shock resistence:4.7M,1.2M.3.5M,300k
Transmission distance:50-150m in open area.

Technical Parameter
Transmission frequency: 433MHz
Operating Power: 23A 12V
Built-in Antenna
It will send the alarm signal to control host once the door or window is opened

Package Content
1 X Wireless door/window detector(battery include)