This TV amplifier with 4G filter is ideal for improving reception on a single TV whilst simultaneously eliminating intereference from mobile phone signals. To use, simply plug into electrical socket, connect TV antenna cable into the 'ANT' socket and the TV / VCR cable into the 'TV' socket. Once proper connection is made, turn the power on and select gain level as required. Includes 2 x 'F' Type male to PAL female connectors. Features: 4G LTE filter output 694-862MHz Power: 240VAC/50Hz 10A 2.5Watt Low Noise 3dB Built in LED indicator RF shielded internal metal housing For indoor use only