Measy AU682 200m Through-wall Audio Transmitter Receiver with Bluetooth 3.5mm Interface Support Optical SPDIF Coaxial 3.

Specification Optical axis coaxial output sampling rate192kHz 24bitDescribeTransmitterReceiverOperating Voltage3 6 5 5V DC3 6 5 5V DCWorking currentMax 250mAMax 100mAAmbient temperature0 85℃0 85℃The actual working frequency range of the module749 770NHz749 770NHzModulate heatstroke preventionPi 4DQPSX Channel spacing4MHz4MHzFrequency selection methodProvide channel one way loop selectionProvide automatic tracking searchFrequency stability 100KHz 100KHzModule actual working channel20CH20CHModule channel interval1MHz1MHzSending and receiving distance100 meters in an open place the test uses a transmission power of 100mv Transmit power1 100mv default 100mv Receiving sensitivity 95dBmInput levelMax 1 0Vpk input resistance10k ohm Input and output interface3 5 audio input3 5 audio output 192kHz optical output coaxial outputStereo output level 1 30mW RL 32Stereo output level 2 50mW RL 32Output impedance 1k OhmOutput input gain ratio1 01Frequency Range20 20000Hzdelay2 5nsSampling Rate3 5 AUX 48KHz 32bit Optical axis coaxial 192kHz 24bitSignal to noise ratio95dBDynamic Range90dBLeft and right channel isolation85dB Feature Support through wall transmission it can transmit through obstacles such as walls ceilings wood glass etc to solve the problem that Bluetooth cannot obstruct transmissionSupport one sending and multiple receiving up to 1 sending and 20 receiving receivers can be purchased separately to add receiversTransmitter TX Transmit Bluetooth wireless