Review on 🔌 Hollyland Mars 400S Pro: Ultimate 1080p HDMI&SDI Transmission System for Seamless 5G Wireless Video & Audio Streaming, 400ft Reach, and Ultra-Low Latency. Android & iOS App Support for Direct Live Streaming (Transmitter+Receiver) by Justin Ott

To be honest I really like this latest RX/Tx from Holland. As a 300 owner, I chose this latest version because of the ability to add a second receiver, as well as the ability to stream to a mobile phone via the app. The signal is strong, the latency is very low and the build quality is really good. The fan can be noisy, so keep that in mind when recording audio with the camera. However, given the potential for RF interference, it's better to record audio off-camera. They have many advantages compared to Teradek and I love using Hollyland in my small projects. I've never had much trouble trusting their products and they seem to have great customer support. BUT remember that the cold shoe mount on these devices is poorly made. Right out of the box my receiver mount was wobbly while my transmitter was fine. I have seen photos from other owners and unfortunately the mount cuts off very easily. Hopefully Hollyland will consider improving future devices or giving better warranties because they have a great product. Hope this was helpful to someone. For your health.