Dj Tech QUADPROVHF Jamminpro 4 Channel VHF Wireless Microphone System

Squelch Control: Noise-lock, Frequency Deviation: +/- 18kHz,Frequency Response: 80Hz-15kHz Frequency Stability: +/- 0.005%,S/N Ratio:>70dB,Total Harmonic Distortion: <0.5 % (at 1kHz) Number of Channels: 4 Channels, Receiving Sensitivity: -80dBm,Operating Range: 50m in open area, False Image Interference Rate: 80dB Harmonic Interference Rate: 50dB,Transmit Power: <10mW,Receiver Power Supply: DC 12V/500mA,Transmitter Power Supply: 9V battery Color for Frequencies: Orange: 188.6MHz Violet: 204.8MHz Red: 181.25MHz Green: 209.5MHz,Accessories: AC Adaptor 9V Batteries User Manual