"Transmitter " "Working Frequency:433~433.7MHz " Radiated Power:more than7dBM Max. Input Level: Virtual Value 500mV (1kHz sine wave) Transmitter Power Supply: DC 12V/300mA (Center Positive) Radiating Range: Approx. 80m Operating Current: 50mA Receiver Carrier Frequency: 432.6MHz-434.1MHz Receiver Power Supply: DC 3V, two 1.5V batteries Operating Current: 20-35mA Frequency Response:70Hz~10KHz S/N Ratio:more than32dB "Total Harmonic Distortion:less than1% " Channel Separation: more than22dB