Good partner of office meeting, conference, interview, party, classroom, promotion, church, speech, teaching and more for hosts Specification Transmitter Frequency range: 610MHz~675MHz Modulation system: DQPSK transmitted power: 10dB Battery type: 3V Working current: Transmitter Frequency range: 610MHz~675MHz Receiving sensitivity: -94dBm Working current: How to use STEP 1 install batteries into the receiver and transmitter( two AAA and two AA not included ) STEP 2 turn both receiver and transmitter, both indicators are lighting solid, put close and they will paired automatically, the indicator of the receiver turns to yellow when paired successfully STEP 3 plug the receiver into the MIC port/input of your device, e.g, speaker, voice amplifier, PA system etc If the microphone and receiver pair failed or you want to change frequency, turn off the transmitter and receiver first, then turn on the transmitter, keep pressing the select button of transmitter until the light start flicker, now turn on the receiver and put them close, press the select key once again, the frequency will be fixed , the receiver indicator will turn yellow if match successfully
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