... We can provide certifications 3.Wireless frequency: 315MHZ/433MHZ 4.Voltage: DC 5V 5.Wireless Transmitter Wireless RF module transmitter for ... 3G Alarm System, GSM Power Alarm, Video Monitoring system, Wireless Remote controller, RF Transmitter/Receiver module, Smoke/Gas/PIR Motion ... sensor and so on. We can also research and develop wireless remote control system based on clients’ needs, which are ...