Troubleshooting:

1.NO POWER:1-1 Checkc the power supply is turn on;
1-2 Check the power supply is connected well with the unit.
2.NO PICTURE:
2-1 Check that the display device is powered on and connected to the transmitter;
2-2 Check that the display device is powered on and connected to the receiver;
2-3 Check the input and output cabling;
2-4 Check that the cables are in good condition;
2-5 Check that the HDMl standard cable is compliant with EIA/TIA 568B;
2-6 Check the HDMl cables are no longer than 33 feet(10m meters),and that network cables do not exceed their length limits.Use twisted-pair cables that has a maximum length of 164 feet(50 meters) at 4K@30Hz and 262 feet(80 meters) at 1080P@60Hz.3.POOR QUALITY SIGNAL:
3-1 Reconnect all the cables to prevent poor connections;
3-2 Check that the HDMl standard cable is used;
3-3 Check that HDMl cables are no longer than 33 feet(10 meters),and that network cable do not exceed their length limits.4.IR CONTROL:
4-1 Plug IR receiver cable into IR in port.
4-2 Plug IR emitter cable into transmitter IR out port;
4-3 Make sure the IR emitter head is secured over IR window center of source device.

Package Contents
1x 4K  Transmitter
1x 4K Receiver
1xPower Adapter(5DC 1A)
1xIR Emitter
1xWide-band IR Receiver(30KHz~50KHz)
1xUser Manual

General Information
Color:Silver
Dimension(LxWxH):84.5mm x 21mm x 67mm
Weight:0.12kg
Power Supply:DC 5V 1A 
Power Consumption:3W (Pair)

Technical Detailst:Input/Output:
TX--1xHDMI in,1xUTP out
RX--1xUTP in,1xHDMl out
Input/Output Resolution Support: 3840x2160@30/25/24Hz,1080p@60/50/30/25/24Hz,1080i,720p
Transmission Distance:Cat 5e/6: 4K:max.50m; 1080P: max.80m.
Support Audio Format: DTS-HD,Dolby-True HD,DTS,Dolby-AC3,DSD,Stereo.