... the gas leak, the spillway of the defence zone . Defence zone divided into wired and wireless defence zone .2, alarm phone ... no condensation Weight: NW: 1 KG We also provide alarm accessrioes: Welcome:We can develop and customize products according ... Security Alarm System, 3G Alarm System, GSM Power Alarm, Video Monitoring system, Wireless Remote controller, RF Transmitter/Receiver module, Smoke/Gas/ ...