HDMI 8x8 Matrix Switch Kit, HDBT, PoC, 4K/60 Installation & Operation Manual© MuxLab Inc. 2019 93.2. HDMI 4x4 Matrix Switch Rear PanelNo. Name Description1 HDMI IN There are 8 HDMI inputs, which are to be physicallyconnected to the HDMI source devices.2 IR EmittersThere are 8 IR Emitter ports: These 8 ports should beconnected to the IR Emitters and attach to the front ofeach source. They emit the IR signal received fromeach HDBT Receiver3 IR SensorsThese 8 ports should be connected to the IR Sensorsand attach to the front of each source. They emit theIR signal received from each HDBT Receiver.4 HDBT OUTThere are 8 RJ45 outputs, used to deliver HD video,audio and PoC to the HDBT Receivers, at up to 70m.Two (2) HDMI outputs are available from HDBT 1-25 Digital AudioOUTDigital audio output connects directly via a coaxialdigital cable6 RS232Serial port for local unit control via a PC with terminalsoftware. Uses a 3-pin pluggable terminal block toconnect with the control device (e.g. PC).7 RS232 HDBTPortsSerial ports for HDBT control8 Ethernet Connects with a PC over the network for TCP/IP9 PoH Power 48V/2.5A DC Power over HDBaseT connector10 Power 48VDC/2A DC Power connector