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Hollyland Mars 400S PRO SDI/HDMI Wireless System

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Hollyland has announced its new Mars 400S PRO SDI/HDMI Wireless System. It is a follow-up to the companies Mars 400S SDI/HDMI Wireless Video Transmission System.

Key features

  • Transmits up to 1080p60 via SDI or HDMI
  • 400′ line-of-sight transmission to receiver, 300′ to App
  • Bright OLED display
  • Real-time app monitoring and live streaming via the HollyView app
  • Simultaneously transmit to one receiver and two mobile devices, or transmit to four mobile devices
  • HDMI and SDI inputs on transmitter and HDMI and SDI outputs on the receiver
  • Two antennas on the transmitter and two antennas on the receiver
  • Power via L-series battery, DC adapter, or USB Type-C input
  • Integrated shoe adapter with 1/4″-20 mounting thread
  • Install optional channel scan firmware via the HollyView app to find the strongest signal

New Design

The redesigned body is supposed to make the system more streamlined when mounting it to camera rigs. When I first saw the design it reminded me of the old Ricoh WG-60 Waterproof Digital Camera.

I’m personally not a fan of the way these look. It is somewhat ironic that the Mars 400S Pro looks more prosumer than the prosumer Mars 400S.

So what’s different?

The biggest difference between the Mars 400S Pro and the Mars 400S is looks. Nothing much else has changed. Both TX units have SDI and HDMI inputs and both TX units have SDI and HDMI outputs.

The Mars 400S Pro TX and RX units weigh in at 206 g (0.5 lb) which actually makes them slightly heavier than the Mars 400S RX and TX units.

The Mars 400S Pro TX and RX units weigh in at 206 g (0.5 lb) which actually makes them slightly heavier than the Mars 400S RX and TX units.

As far as physical size is concerned, the Mars 400S Pro RX and TX units measure in at 4.3 x 2.8 x 1.32″ / 11 x 7.2 x 3.35 cm. The Mars 400S RX and TX are 4.41 x 2.56 x 0.94″ / 11.2 x 6.5 x 2.4 cm

Both the original 400S and the 400s Pro have the same claimed range of up to 400′ when using the RX and TX units and up to 300′ when using the TX and the Hollyview Wi-Fi app.

The 400S Pro is claimed to have a latency of 80ms. The transmitter can simultaneously transmit to up to one receiver and two apps, or to a total of four apps without the receiver. It can steam up to 1080p60 through either the SDI or HDMI input. This is exactly the same as the Mars 400S.

Apart from the redesigned external housing there really aren’t any noticeable improvements over the original Mars 400S.

Hollyview App

Using the Hollyview app for iOS or Android, you can monitor your video transmission in via a Wi-Fi connection as well as live stream directly from the receiver via your computer using a USB Type-C adapter. The app also allows you to install optional channel scanning firmware enabling you to easily find the strongest transmission signals. The transmitter can simultaneously transmit to up to one receiver and two apps, or to a total of four apps without the receiver.

Other Features

The 400S PRO TX and RX feature a bright OLED display for configuration and an integrated shoe adapter with a 1/4″-20 mounting thread for different mounting options.

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Each unit can be powered using a USB Type-C source, the included locking DC power adapter, or by using a separately available L-series type battery using the integrated battery plate.

Price & Availability

The Hollyland Mars 400S Pro retails for $649 USD, which is $80 USD more than the current price of the Mars 400S ($569 USD) on B&H.

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