... valid detecting distance 8~10meter, detecting activate angle: 120 degrees horizontal, 60 degrees vertical) 5) Option: Wireless smoke detector /gas ... are Home PSTN/GSM Security Alarm System, 3G Alarm System, GSM Power Alarm, Video Monitoring system, Wireless Remote controller, RF Transmitter ... We can also research and develop wireless remote control system based on clients’ needs, which are widely used ...