NO. Description Transmitter module Receiver module 1 Working voltage 3.6- 6V DC 2.5 - 3.6V DC 2 Working electric current Max 120mA Max 35mA 3 Working temperature -15~ +65 degree celsius -15~ +65 degree celsius 4 Frequency response 2400 - 2483 MHz 2400 - 2483 MHz 5 Modulation GFSK GFSK 6 Baud rate 2M bps 2M bps 7 Channel space 4MHz 4MHz 8 Stabilization of frequency +/-156KHz +/-156KHz 9 Work frequency range 2400 - 2483 MHz 2400 - 2483 MHz 10 Work channel 20 CH 20 CH 11 Channel space of module 4MHz 4MHz 12 Output power 0-20 dBm 13 Receiver sensitivity 90dB 14 Input power Max 1.0Vrms 15 Input impedance 10k Ohm 16 Input mode Two input modes: 1. Microphone 2. Stereo audio 17 Stereo output 1 30mW RL = 32ohms 18 Stereo output 2 50mW RL = 16ohms 19 Output impedance 1k Ohm 20 RF Distance 100-150 meters in the open area under 20dBm 21 Output input gain ratio 01:01 22 Frequency response 20 - 20000Hz ( +/1dB ) 23 The latency time < 0.5 ms