Voltage: 5V
44.1K sampling rate,24 bit AD sampling
16-channel selectable

Parameter: Voltage: 5V maximum distance 100 meters on open ground. working current: 50mA working channel: 16CH input impandance: 600ohm output amplitude of the audio signal: 0.3-1v frequancy: 20hz-20khz 16-channel selectable. 44.1K sampling rate,24bit AD sampling to achieve nondestructive high-fidelity digital audio transmission NOTE: 1. schematic attached in the tital pictures 2. please connect the power on the item. input analog signal to the transmitter, then you will receive the signal in receiver 3. if the leds on both boards flick twice, the two boards get a pair 4. if there is other signal influence the board, please press the button on the transmitter. you will see the LED get flick, and the led on the receiver flick as well, they will jump to another channel. we have 16 channel. Package: 1 pair(transmitter receiver) NRF24L01 2.4G wireless digital audio transceiver module