Handheld transmitter compatible with Chord NU series single channel wireless receivers. Available in 2 different carrier frequency versions with pilot tone for compatibility with NU1 systems.Power supply[tab]3Vdc (2 x AA batteries)[br]Maximum range[tab]60m[br]Dimensions[tab]243 x 48mmØ[br]Weight[tab]238g (no batteries)Carrier frequency[tab]863.1MHz