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Hollyland Mars 300 Pro Dual HDMI Wireless Video Transmission System

The lightweight Hollyland Mars 300 Pro Dual HDMI Wireless Video Transmission System add up to 1080p60 wireless video transmission to your gimbal, mirrorless, or DSLR camera rig. The compact 300 PRO transmitter feature a bright OLED display for configuration, and a 1/4"-20 mounting thread for different mounting options. The unit can be powered using a USB Type-C source, or by using a separately available L-series type battery using the integrated battery plate. It features up to 100 m line-of-sight to the receiver or Hollyview app. The transmitter provides an HDMI input and an HDMI loop-out for viewing on an onboard monitor. 

  • 121.92 m to RX, 91.44 m to App Line-of-Sight
  • Transmit up to 1080p60
  • Transmitter: HDMI Input & HDMI Loop-Out
  • Receiver Has 2 x HDMI Outputs
  • 2 x External Antennas on Transmitter
  • Real-Time iOS/Android App Monitoring

The transmitter can transmit to one receiver and two apps, or to a total of three apps, simultaneously.

External Antenna for a Compact and Sleek Look

Featuring an external antenna design, the Mars 300 Pro can be stored away neatly. In addition, the installation is made easier by the front mounting holes and the heat dissipation is optimised by the side heat dissipation holes. The compact devices include many thoughtful designs to let you store, install, and use it without hassles.

Broader Coverage, Less Latency 

The 120m transmission distance supports a larger working range. The 0.1s ultra-low latency ensures instant transmission, allowing the cameraman to collaborate more efficiently with the director, lighting technical, etc. in the shooting or livestreaming team. 

On-for-All Thumbwheel Switch

The menu is operated by a thumbwheel switch. You can choose the desired function or channel by turning the thumbwheel switch. The thumbwheel switch is used to configure all settings, which effectively reduces the number of buttons on each device, making it more elegant and integrated. 

Unstoppable Power Supply

The Mars 300 Pro can be charged via a power bank (via USB Type-C port), DC adaptor or NP-F battery, and you can switch to a different power supply at any time. Multiple power supply options give you more power assurance.

Dual HDMI ports and Loopout Support

Allows you to connect more devices, both the receiver and transmitter provide two HDMI ports, which support simultaneous input and output. One of the HDMI ports on the transmitters is a loopout, which can output video to a small monitor on the camera, and allow the cameraman to clearly see the shots. 

All Keys info at a Glance

The high-definition side OLED display clearly shows all necessary info including signal strength, remaining battery power and channel. Whether the device is installed vertically or horizontally, the screen will face you, and you can see what is displayed without lowering the device.

Your Phone is your Monitor 

You can monitor the shots with an app installed on your phone or tablet. The app provides additional functions including 3D LUTs, focus peaking, zebra, and zooming. By turning phones into monitors, multiple team members can collaborate at zero cost. 

Quick and Easy Firmware Upgrade via App

Once you have connected to the device using the mobile app, you can start the firmware upgrade by tapping a single button 


Power source
1 x Sony L-Series / NP-F Type
1 x USB Type-C (5 VDC at 2 A) Input
Input Connection
1 x USB Type-C Input
11 x 6.1 x 2.1 cm
189 g


Power source
1 x Sony L-Series / NP-F Type
1 x USB Type-C (5 VDC at 2 A) Input
2 x RP-SMA Female
Input Connection
1 x HDMI Input
1 x HDMI Loop Output
1 x USB Type-C Input
10.6 x 6.1 x 2.2 cm (Without Battery Plate)
172.5 g
Top Sellers - Gold
R 11,830 Only 1 left in Store
Payment plans available
Delivery Truck Free Standard shipping included. Faster options available

What's in the box

  • Hollyland Mars 300 Pro Dual HDMI Wireless Video Transmission System
    • Transmitter
    • Receiver
    • 3 x Transmitter Antenna
    • Expansion Mount
    • Shoe Mount
    • USB Type-C Cable
  • Limited 1-Year Warranty

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