Carrier frequency range: 615MHz-665MHz Frequency width: 2X32MHz Modulation mode: FM Maximum frequency offset: ±45KHz Frequency response: 50Hz-15KHz Signal to noise ratio (S/N) : >105dB(A) Distortion (1 KHz): <0.3% Operating temperature: -10°C-55°C Working distance: 100 meters(Ideal environment)