Hollyland Mars 400S Pro is a wireless HDMI and SDI video transmission system that uses a 5GHz band for transmission up to 120 meters. The MARS 400S Pro system has a very low latency, only 0.1 seconds and allows the transmission of both SDI and SDI. HDMI signal in resolutions up to 1080 / 50p and 1080 / 60p.
The Hollyland Mars 400S Pro wireless video transmission system can transmit SDI and HDMI video signals over a distance of up to 120m when using a standard receiver (Rx). However, thanks to the use of the 5GHz band, the 400S Pro system can also transmit a video signal to mobile devices with a distance of up to 90 meters. The video signal from one Mars 400S Pro (Tx) transmitter can be received on up to two 400S Pro (Rx) receivers, or a combination of 1x receiver (Rx) and 2x mobile devices (smartphone, tablet) or on up to four mobile devices.

It doesn't matter if you connect HDMI or SDI output from the camera to the Mars 400S Pro. The receiver output system (Rx) provides a signal on both connectors simultaneously. There are two outputs available that you can use simultaneously for preview or to the recorder.

In addition to physical outputs, the Mars 400S Pro wireless system also provides high-quality Direct Video output for live streaming or other LAN use in the form of an RTSP stream. It can be watched on popular live-stream and recording software such as OBS Studio or VLC Player, in a data rate of up to 12 Mbps.

You can use one of three power options to power both the Mars 400S Pro transmitter and receiver. Directly on the body of the transmitter and receiver there is a battery holder type SONY NP-F (eg SONY NP-F970, SWIT S-8972). The second option is to use a round barrel connector that supports voltages in the range of 6-16VDC, so you can easily use an adapter from different batteries or power outputs from the camera. The third option is a modern and increasingly widespread USB-C interface, which supports voltages in the range of 5-12V, for which you can easily use, for example, a power bank or a USB-C power output from a monitor or camera.