Radio transmitters with 500mW transmit power + 4 channel receiver RC310 transmitter and Receiver set to build an analog radio transmission of a security camera. wireless transmitter: Frequency: 2.4GHz with 4 switchable channels, transmit power 500mW. The range is about 300-500 m .. The transmitter is intended for the connection of any surveillance camera. This is connected via RCA cable to the transmitter and then transmits video and (if available) Audio via radio. The advantage of a separate camera - transmitter combination is that even very high-quality surveillance cameras can be used that are not normally installed with the usual wireless camera systems become. In principle, any other desired video source can be connected to the transmitter. The antenna of the transmitter is exchangeable.