Available Frequencies:120 Transmitter Output Level:20 mW Band:UHF Operating Range:Under Typical Conditions 300' (92m), actual range depends on RF signal absorption, reflection and interference Audio Frequency Response:(+/-3 dB) 60 Hz - 16 kHz Total Harmonic Distortion:(+/-30 kHz deviation, 1 kHz tone): 90 dB A-weighted Operating Temperature Range:14 to 122 deg. F (-10 to 50 deg. C) battery characteristics may limit this range Audio O/P(+/-30kHz deviation, 1kHz tone):XLR Connector (into 600 Ohms load) -12 dBV1/4' Connector (into 3 k Ohms load) -18 dBV Output Connections:1x Male XLR Balanced1x 1/4' Unbalanced Output Impedance:XLR connector 200 Ohms1/4' connector 1 k Ohms XLR Output:Impedance balancedPin 1: Ground (cable shield) Pin 2: Audio +Pin 3: No Audio - Sensitivity:-93 dBm for 30 dB Image Rejection:>90 dB Casing:Metal Chassis EIA STANDARD 1/2 U Power Requirements:12-18 V DC at 1000 mA, supplied by external power supply