Passive transmitter with 4 wires, 3 set coil inductors, 2 grade anti-thunders 4-channel passive video transceiver High quality alloy BNC male adapter with 10 cm wires 60dB crosstalk and noise immunity Outstanding interference rejection Quality color and black and white video signals over 1,000 ft. of unshielded twisted pair wires Transfer quality video up to 4,500 ft. for active UTP receiver Suitable for multiple joining Frequency response: DC-8MHZ