How to set them up when multiple sets of MARS 400S Pro are used at the same location? Hollyland Tech March 01, 2021 08:08 Updated Overviews: The methods of how to install multiple sets of Mars 400S Pro will be shown in the below article. Up to 3 sets of MARS 400S Pro at the same location Choose different Frequency Channels and the interval between the channels should be at least 2 numbers Place the Receiver at least 0.5m far from each other Place all Receivers 1.7m above the ground Related articles what kinds of MARS series products support 1 transmitters to 2 receiver? How to add my own LUTs to HollyView App? How to set them up when multiple sets of MARS 300 PRO are used at the same location ? How to do the App Connection？ Could I Choose SDI IN HDMI Out or HDMI IN SDI Out? Comments 0 comments Article is closed for comments.