Is Mars 4K fan adjustable? Hollyland Tech September 09, 2022 10:24 OVERVIEWS: Mars 4K has built-in fan design, and it has 2 mode to adjust. Both Mars 4K transmitter and receiver have built-in fans for heat dissipation, and the fan can be adjusted. There are two fan settings, 【Automatic Mode】 and 【Silent Mode】. In silent mode, the fan is still turned on, but the noise of the fan will be smaller. Article Number: 【AS-220827003_8】 Related articles Mars 4K how to enter scene mode, and how to use it? How to set them up when multiple sets of MARS 4K are used at the same location? Comments 0 comments Article is closed for comments.