Frequency range Range: Frequency 730-950MHZ UHF adjustable channel number Channels: Selectable 16 oscillation mode Mode: Oscillation Phase locked loop frequency synthesizer synthesized PLL frequency stability Stability: Frequency 10ppm receiving mode Mode: Receive Super heterodyne two times variable frequency Superheterodyne diversity type Type: Diversity Dual tuning true diversity tune true diversity Input receiver sensitivity Sensitivity: Dual -90dBM audio frequency response Audio Response: 40Hz-20kHz harmonic distortion 1kHz: T.H.D.at The signal-to-noise ratio is less than or equal to 0.5% Signal to Noise Ratia: 110dB audio output Audio Output: Balanced output and unbalanced output XLR Unbalanced 1/4 Jack "socket Balances transmit power Output: RF 10mW (max 50mW) 10mW (Max. 50mW) Modulation mode Mode: Modulation FM FM Battery Specification Requirement: Battery 1.5V (GM-850) effective action distance The Function Distance: Validate 50-150M (visual environment change)