Measy AU-680 Wireless Audio Transmitter Transmission Receiver Stereo Music Sender Kit

Specifications: Operating voltage: 3.6-5.5V DC Working current: Max. 250mA(transmitter) Max. 100mA(receiver) Module actual operating frequency range: 749-770MHz Modulation method: Pi/4DQPSK Frequency selection method: carrying channel one-way loop selection provide automatic tracking search Frequency stability: 100KHz 100KHz Module actual working channel: 20CH 20CH Module channel spacing: 1MHz 1MHz Transceiver distance: 100 meters (in the open space, the test uses a transmission power of 100mv) Transmit power: 1-100mv (default is 100mv) Receive sensitivity: -95dB Input level: Max. 1.0Vpk Input impedance: 10k ohm Input interface: Stereo audio input Ordinary microphone input Monitor booster input Stereo output level 1: 30mW RL=32 ohms Stereo output level 2: 50mW RL=32 ohms Output impedance: 1k Ohm Output input gain ratio: 1:0.1 Frequency response range: 20-20000Hz Delay time: 2.5ms Sampling rate: 48KHz 32bit Signal to noise ratio: 96db Distortion: 0.3% 1KHz Dynamic range: 90db Left and right channel isolation: 85db Product size: 100 x 100 x 27mm/3.94 x 3.94 x 1.06 inches Packing size: 210 x 117 x 30mm/8.27 x 4.61 x 1.18 inches Gross weight: 480g Package Included: 1 x Receiver 1 x Transmitter 1 x USB Cable 1 x User Manual