Measy AU680 Wireless Audio Speaker Transmission Box, Transmitter & Receiver, Transmission Distance: 100m

Wireless audio transmission box that functions as both a transmitter and receiver. It enables wireless audio for home entertainment systems, with a transmission distance of up to 100 meters outdoors.

• Operating Voltage: Transmitter: DC 3.6V-5.5V; Receiver: DC 3.6V-5.5V
• Working Current: Transmitter: 250mAh; Receiver: 100mAh
• Ambient Temperature: 0-85°C (Transmitter and Receiver)
• Operating Frequency Range: 749-770MHz (Transmitter and Receiver)
• Modulation: Pi/4DQPSK (Transmitter)
• Channel Spacing: 4MHz (Transmitter and Receiver)
• Frequency Selection Method: Transmitter: Carrying channel one-way loop selection; Receiver: Automatic search and manual conversion
• Frequency Stability: +/-100KHz (Transmitter and Receiver)
• Working Channel: 20CH
• Module Channel Spacing: 1MHz
• Transceiver Distance: 100m (using transmit power 100nV in open space)
• Transmit Power: 1-100mV (default 100mV)
• Receiving Sensitivity: -95dBm (Receiver)
• Input Level: 1.0VpK (Transmitter)
• Input Resistance: 10K ohm (Transmitter)
• Input Interface: Three input modes - Stereo audio input, Normal microphone input, Monitor pickup audio input (Transmitter)
• Stereo Input Level 1: 30mW RL=32ohms (Receiver)
• Stereo Input Level 2: 50mW RL=32ohms (Receiver)
• Output Impedance: 1k ohms (Receiver)
• Input-Output Gain Ratio: 1:01
• Sphere of Influence: 20-20000Hz
• Time Latency: 2.5ms
• Sampling Rate: 48KHz 32bit
• Signal to Noise Ratio: 96dB
• Distortion: 0.3% at 1KHz
• Dynamic Range: 90dB
• Left and Right Channel Isolation: 85dB
• Package List: Transmitter x 1, Receiver x 1, USB power cable x 2, Manual x 1