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HL-Mars 400S Pro II

Hollyland Mars 400S PRO II SDI/HDMI Wireless Video Transmission System

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  • Mars 400S PRO Receiver Only
  • Receive up to 1080p60 Video from 500'
  • Extremely Low 70 ms Latency
  • 3G-SDI and HDMI Outputs, Embedded Audio
  • L-Series Battery/USB-C/DC Power
  • OLED Display, Low-Battery Warning
  • 12 Mb/s Data Rate, Adjustable Fan Modes
  • Shoe Adapter and 1/4"-20 Mounting Thread

The Hollyland Mars 400S PRO II SDI/HDMI Wireless Video Receiver boasts dual HDMI and SDI outputs for versatile connectivity to your monitoring equipment, along with impressively low 70 ms latency and a high 12 Mb/s data rate. With a line-of-sight transmission range of up to 500', reinforced by two external antennas (one included as a spare), you can rely on a strong signal even in challenging environments. Plus, the Hollyland Mars 400S PRO II SDI/HDMI Wireless Video Receiver can efficiently transmit video to up to two receivers simultaneously, enhancing your flexibility on set.

Greater Range, Lower Latency

The Mars 400S Pro II is a powerful video receiver that offers a wireless range of up to 500' and achieves a low latency of just 70ms. The Mars 400S Pro II is equipped with SDI and HDMI outputs, supports multi-receiver setups, and allows monitoring through the HollyView App.

Crisp Clarity with High Data Rate

The system supports a high 12 Mb/s data rate, enabling high-definition video transmission and delivering clear, refined image quality with rich details.

Ultra-Low Latency

The Mars 400S Pro II raises the bar with a very low latency of just 70ms. It outperforms Mars 400S Pro by reducing latency by 30% and providing a stable signal transmission range of up to 500'. This ensures high-definition image quality and an immersive low-latency experience. It is also compatible with Mars 400S Pro, allowing them to be paired and used together.


Equipped with both SDI and HDMI outputs, the Mars 400S Pro II receiver provides enhanced device compatibility and convenient connections to various types of equipment. Whether it's a DSLR or professional film camera, a switcher, an app, or a display, the Mars 400S Pro II can fulfill your connectivity requirements.

Smart Channel Scan

Upon startup, Mars 400S Pro II automatically selects the best frequency channels. Manual channel scanning can be conducted using the receiver or the HollyView App, providing a visual representation of signal interference levels at each frequency. The app allows you to install optional channel-scanning firmware, enabling you to easily find the strongest transmission signals.

Monitor on up to 4 Devices

The Mars 400S Pro II offers flexible solutions to meet monitoring needs, including team collaboration, multi-crew monitoring, and multi-member cooperation. Using the Hollyview app for iOS or Android, you can monitor your video transmission in real time via a Wi-Fi connection as well as live stream directly from the receiver via your computer using a USB-C adapter. The transmitter can simultaneously transmit to up to one receiver and two apps, or to a total of four apps without the receiver.

Flexible Fan Control

Each Mars 400S Pro II unit is equipped with a three-speed fan adjustment feature (Auto, Low Speed, Off). Its intelligent cooling design allows it to perform optimally in various usage scenarios by reducing device temperature and ensuring stable signal transmission.

Integrated Cold Shoe

Integrated with a shoe adapter featuring a 1/4"-20 screw simplifies the installation process. Simply connect the shoe adapter of the Mars 400S Pro II to a cold shoe slot on your camera or cage without the need for any cumbersome additional installation steps.

In the Box
  • Hollyland Mars 400S PRO II SDI/HDMI Wireless Video Receiver
  • 3 x Antenna
  • DC Power Adapter
  • Limited 1-Year Manufacturer Warranty
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More Information
MPNHL-Mars 400S Pro II
Product ConditonNew

Inputs / Outputs

Antenna I/O

2x RP-SMA Male

Video I/O

1x HDMI (Unspecified Signal) Output 1x BNC (3G-SDI) Output

Embedded Audio


Audio I/O


Power I/O

1x Barrel (16 VDC) Input 1x USB-C (2 A / 5 VDC) Input




Wireless Range

500' / 152.4 m (Line-of-Sight)

Channel Bandwidth

20 MHz

Frequency Range

US: 5 GHz


70 ms

RF Sensitivity

-80 dBm



Mobile App Compatible

Yes: Android & iOS App Name: Hollyview

Cellular Support


Format Support

Video Format

HDMI/SDI 1080p

Wireless Video Compression



DC Input Power

6 to 16 VDC

Battery Type

1x L-Series

Power Consumption

7 W



1x Cold Shoe 1x 1/4"-20 Female


Environmental Protection






4.3 x 2.8 x 1.3" / 110 x 72 x 33.5 mm


7.3 oz / 206 g

Packaging Info

Package Weight

1.32 lb

Box Dimensions (LxWxH)

7.5 x 5.4 x 2.7"

WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov
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