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

  • mfr: HL-MARS 400S PRO
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  • Free standard shipping

    *Orders placed before 3 PM EST Mon - Thur will ship the same day. Orders placed beyond these hours will be shipped the next business day. Exclusions apply. See shipping policy

  • Free Local Pickup

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Product highlights

  • Transmitter supports up to two receivers
  • Supports up to 2 mobile monitoring when receiver is connected
  • Supports up to 4 mobile monitoring without receiver connection
  • OLED display screen with battery voltage display
  • Channel scan and firmware update on app
  • Three application scene modes
  • Video feed straight out of RX via video capture device
  • 400-feet transmission range and 0.08 Low latency
  • SDI and HDMI inputs on TX and SDI and HDMI outputs on RX
  • Integrated cold shoe for quick installation

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

Awaken the power with the Mars 400S Pro. The Mars 400S PRO from Hollyland is your perfect companion for indie filmmaking, live broadcasting, sports activities, education recording, wedding ceremonies, and corporate events. This system has a 400-feet line of sight (LOS) reliable wireless video and audio transmission with only 0.08S latency. Featuring a sleek industrial design, the Mars 400s PRO has a lower gravity center, which means, it takes less space on setup. Thanks to the integrated cold shoe on both the transmitter and the receiver, the system provides a much more stable and convenient installation.

High Quality Recording and Live Streaming

The Mars 400S PRO features the direct live stream data feature. Now, with the 400S PRO, video feed straight out of RX will be used for live streaming on OBS, vMix, or VLC on your personal computer without further encryption and decryption via a video capture device. This system comes with HD Mode, balance mode and speed mode in the settings. The data rate is raised from 8M Bps to 12M Bps for HD monitoring quality. It also features Off, Low Speed and Auto fan modes for different applications and better shooting experience.

Channel Scan and Firmware Update on App

This system automatically scans the current wireless environment and enable you to easily find out the optimal channels for use on both RX and on the HollyView App. The App can also directly upgrade the system while abandoning the traditional upgrade on the devices. Both the channel scan and firmware upgrade are just a click away.

Additional Features

The transmitter supports up to two receivers and for the number of RX and App, it follows the 2 RXs - 0 App, 1 RX - 2 Apps, 0 RX - 4 App pattern. The Mars 400S Pro also allows up to four phones and Tablets real-time monitoring with professional monitor features, such as Waveform, Focus Peaking, Zebra, Zoom In/Out, 3D Luts, etc. Both transmitter and receiver equipped with L-series battery plate and also can power by DC adapter or power by USB-C interface. Hollyland Mars 400S PRO supports 5~12V wide voltage power supply with Type-C charging option added to various L-series batteries and 6~16V DC power options. Additionally, without operation for 5s, the OLED screen automatically enters the low-power mode and reduces the brightness to save battery power.


Configuration Core
Pack Size Single Bundle
Weight Transmitter weight: 0.5 lb / 206 g, Receiver weight: 0.5 lb / 206 g
Color Black
Mount Type 1/4"-20 Female
Video Connectors HDMI Output, 1 x BNC (3G-SDI / HD-SDI) Input
Video Input 3G-SDI
HDMI Inputs 1


Customer Questions
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Returns are incredibly simple. Please log into your account, find your item you wish to return and follow the prompts to make a return. If you do not have an account, click here to find your order and make a return.
You will receive a full refund when you return an item in its original manufacturer’s packaging, undamaged and unmarked. If the item you are returning is priced at less than $35, you will be charged a 15% restocking fee. Please note you will not be refunded any shipping charges. 
You have 30 days to make a return. During the holiday season, from November 1 to December 31, we extend the return window to 60 days. 
If your order has been noticeably damaged in transit, we strongly recommend that you refuse delivery and notify us immediately. Claims for missing items or items damaged in transit must be made within 48 hours of delivery. If there is carrier damage, please contact [email protected] with your order number and a description of the damage. 
Oh no! Please contact our customer service team so we can resolve the issue immediately. You can call us on 1.800.221.0828, email us at [email protected], or send us a message here.  
We do not currently offer exchanges. Please return the item you purchased within 30 days and order what you’d like instead. 
If you ordered a kit, you must return all components and accessories to receive a full refund. 
If you ordered a product that included a free item, you must include the free item with your return. If not, your return will not be accepted and you will not receive a full refund. 
We currently only offer camera repairs at our Brooklyn store. The item must be dropped off and collected in person as we do not accept shipped items for repair. For more information, please call our Brooklyn store on 1.718.431.7900. 
Most items can be returned within 30 days for a full refund. Click here to read our full return policy. 

Shipping and Returns

Same Day Shipping

All orders placed by 4PM( EST), Monday through Thursday, and by 11AM (EST) on Friday, are shipped same day. Orders placed outside these times will ship the next business day. We do not ship internationally or to Puerto Rico, Guam and other US territories at this time. For more details click here.

Free Two-Day Shipping

We offer free expedited shipping on thousands of items within the continental USA (this does not include Alaska and Hawaii).

Flexible, Easy Returns

If you're not happy with your purchase for any reason, our flexible 30-day free return policy makes it easy to get a full refund. Click here to view our return policy.

Ratings and reviews

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

Hollyland Mars 400S PRO SDI/HDMI Wireless Video Transmission System SKU: HL-MARS400SPRO

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