Up to 2 Sets (4 Microphones) can be Used Together. 2 Carrier Frequency Options. Lavalier & Neckband Microphones Included. Compact Half-Rack Receiver. Front or Rear Mountable Antennas. Supplied with Power Adaptor and 4 x AA BatteriesPower Supply: 14Vdc 350mA Batteries: 4 x AA (2 Per Transmitter) Include Carrier Frequency: 863.43 & 864.3MHz (SU20BRG) or 864.8 & 863.1MHz (SU20BBY) Range: 60m Dimensions: 203 x 187 x 42mm (Receiver) & 110 x 676 x 24mm (Transmitter) Weight: 845g (Receiver) & 74g (Transmitter). Dual UHF belt pack wireless microphone system with a compact receiver- supplied with hardware for mounting 1 or 2 units into a 1U 19″ rack space. BNC cables and detachable antennas are provided for rear or front mounting as required. Each transmitter is powered by 2 x AA batteries and is supplied with both neckband and lavalier microphones. Output is provided individually on balanced XLR connectors or mixed to a single 6.3mm jack socket. Providing all the functionality of a dual UHF system in a compact half-rack format.. radio mic-radio microphone-beltpack radio mic-beltpack mic