433Mhz Wireless Magnetic Door Sensor

Features: *433MHz frequency and 1527 code, stable transmission. *With high reliability and low power consumption. *It has the button of arm, disarm, home arm and SOS, so you can operate remotely. *The program uses automatically partial code, effectively overcome the traditional shortcomings of remote control code. *Compact design with key-chain, easy to carry and keep. Discounted at only: US$ 8.9