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Why does my device show ''CH-'' or " ERROR CODE 1"?
Did the DC adapter charge for batteries ?
How to fast and easily identify the channels with interference?
Did the APP support transmission audio?
why the audio and video are not synchronized？
How to change the video input and output format?
Can we use mushroom antenna on the MARS 400S ?
Did the MARS 400S can use D-TAP cable to connect V-Mount battery to charge ?
What is the specifications of DC adaptor?
Why there is no video display when using the system with a switcher ?
Why there is no video output when recording 4K ?
How to set them up when multiple sets of MARS 400S are used at the same location?
How to connect a mobile device to the HollyView App ?
How to pair a new receiver with the system ?
How to switch to another channel ?
How to avoid the Fan noise?