Parameters Power Supply Voltage: DC 12V Operating Current: Less than 0.5A Frequency Range: 76 - 108Mhz Frequency Step: 100KHz Operating Temperature: -10℃-45℃ Frequency Deviation: Less than ± 75kHz (100%) Clutter and Harmonic: Less than 60dB Audio Frequency Response:50Hz-15000Hz Stereo Separation:≥35dB Distortion: ≤2% Input Level:-15dBV (adjustable) Audio Frequency Deviation:±75KHz RF Output Impedance: 50 Ohm RF Output Power: 500mW (10MHz in the vicinity of the center frequency) Reference Range: 0m - 1Km (A barrier-free environment) Unit Dimensions: 144mm(L) * 88mm(W) * 38mm(H) Package includes: 1x0.5W FM transmitter 1xPower supply 1xTNC Antenna 1xAudio Cable