Plug and Play One For All signal boosters couldn’t be easier to use. Connect it to your wall socket and within seconds begin to enjoy crystal clear reception from your TV or Radio. Built with 2 Outputs. Enhanced Picture Quality Designed to boost your TV and Radio reception in poor signal areas, amplifying the signal by 23dB and ensuring the maximum number of channels are available to choose from. Built in 3G/4G LTE filter One For All Signal Boosters have a built in 3G/4G LTE block filter to protect your TV/set-top box (STB) against interference from smartphones, tablets and transmitters.