Specification : Squelch control: Noise lock Frequency deviation : 18 KHz Frequency response : 80Hz~15KHz Frequency stability : 0.005 S/N ratio : >70 dB Total harmonic distortion: >0.5 (@1KHz) Number of channels : 2 Channels Receiving sensitivity : -80dBm Operating range: 50m in open area Resonansi interfere rate : =>50dB False image interfere rate: =>50dB Transmitter power supply : 2×1.5V battery Receiver power supply: AC 220V Transmit power : =<10mW Frequency range : 220~270 MHz Output type: Separate of mixed output