HME (Clear-Com) PRO850 Wireless Intercom System (BS850) S/W:6 BAND:2 #TX:1 #RX:4

Frequency agility enables you to operate the PRO850 within the 470-698 MHz UHF band. The upper band is limited to 12 MHz and 480 receive frequencies. Tx & Rx Antenna.. ¼-Wave (Supplied).