Hollyland Mars 400S PRO II Wireless SDI HDMI Video Transmitter and Receiver, 0.07s Latency 450ft Range, 4APP Monitoring, 1080p 12Mbps 5G Transmission System for Live Streaming Videography Filmmaking


Model: Hollyland Mars 400S Pro II
Color: Black
Good condition with original package
Tested in working condition
Free shipping with a tracking number
Will ship on the same business day when get paid


  • [What’s NEW? 70ms Ultra-Low Latency, 450ft Transmission Range] Compared to the Mars 400S Pro, the Mars 400S Pro II reduces the latency by 30% and extends the LOS range by 50ft, offering an ultra-low 70ms latency and a stable line-of-sight signal transmission of up to 450ft (150m). Whether you require real-time shooting or high-speed transmission, Mars 400S Pro II meets your needs. Farther & Faster!
  • [SDI+HDMI Dual Interfaces, 4 APP Monitoring] Equipped with both SDI and HDMI interfaces, Mars 400S Pro II offers wide compatibility for various equipment, whether it's a DSLR camera or a professional film camera. Whether you choose SDI or HDMI for input, both SDI and HDMI OUT ports support video output at the same time. The TX supports 2 RXs, 1 RX & 2 Apps, or 4 devices monitoring through the Hollyview App.
  • [Up to 1080p, 12Mbps Data Rate, 3 Scene Modes] Mars 400S Pro supports input/output video format of up to 1080p via SDI or HDMI interfaces. The system comes with three scene modes (speed, balance, HD), and the data rate is raised from 6Mbps to 12Mbps for HD monitoring quality. At 12Mbps data rate, it enables 1080p high-definition video transmission, delivering clear, refined image quality with rich details.
  • [Smart Channel Scan, Direct Live Streaming] Upon startup, Mars 400S Pro II automatically selects the best frequency channels. You can manually select the channels using the RX or the Hollyview App with a visual representation of signal interference levels at each frequency. Mars 400S Pro II supports direct video feed from RX to your PC for live streaming on OBS, vMix, or VLC without a video capture device.
  • [Multiple Power Supply and Fan Control Modes] Mars 400S Pro II supports NP-F battery (NOT included), 6~16V DC power, and 5-12V USB Type-C wide voltage power supply options. Equipped with 3 fan speed adjustment modes (Off, Low Speed, Auto), its intelligent cooling design allows it to perform optimally in various usage scenarios, greatly reducing device temperature while ensuring stable signal transmission.



Greater Range, Lower Latency
The Mars 400S Pro II is a powerful video transmission system that offers a transmission range of up to 500' and achieves a low latency of just 70ms. The Mars 400S Pro II is equipped with SDI and HDMI interfaces, 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.
SDI and HDMI
Equipped with both SDI and HDMI interfaces, the Mars 400S Pro II provides enhanced device compatibility and convenient connections to various types of equipment. Whether it's a DSLR or professional film camera, 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.