This receiver can pair a wireless (4.2) connection from any compatible device to route into a stereo loudspeaker system. It can also receive audio from an external wired input via the jack socket, and send to a wired stereo loudspeaker system. The wirless pairing is set to priority mode and can receive signal from up to 10m range. It is powered through a power jack or 2 pin screw terminal.Audio inputs: Wireless receiver or stereo audio line levelAudio source select: Auto switch over - the priority is wireless connectionAudio output: Stereo audio phone jack or 3 pin screw terminalStereo audio output: For connection to any speaker systemPower input (5V DC, 1A): Power jack or 2 pin screw terminalWireless version: 5.0 (up to 10m range)ApplicationsSound & Video, Hobby & Education, Low Voltage, Signal Processing, Music, WirelessContents1x In-wall eceiver, 1x instruction manual