UHF(791.00--863.00 MHz) Receiver Unit,Selective 190 Frequencies, Many units up to 80 sets simultaneously working(160 metres long range) SPECIFICATIONS: CPU control LCD dynamic display  TECHNICAL SPECIFICATION: OSD Mode:PLL LOCK Operating Frequency:520~870 MHz(Can be choosen)  Modulation Mode: FM  Maximum Deviation: ±45KHz  Frequency Response:80Hz~15KHz(±3db)  T.H.D.: ≤1%  Output Power:15~30mW  Sensitivity:12dBuV(80dB S/N)  Sensitivity range:12~32dBuV