Complete system with leads, transmitter, receiver (both with fixed dipole antennas) and power supplies. Just connect cctv camera and microphone to the transmitter, and monitor / TV set to the receiver. 4 channels selectable by DIP switch. Integral, adjustable antenna. Receiver scans up to 4 cameras sequentially and automatically. Radio range up to 30 metres indoors, 100 metres line of sight with standard kit.