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Hollyland Mars 300 Pro Dual HDMI 300-Feet Wireless Video Transmission System (Enhanced)

  • mfr: HL-M300-PRO EHD
  • SKU: HL-M300-PRO-EHD
In Stock

Available options:

  • 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

    Please call for store stock availability.

    Requests made before 2:30 PM EST can be available for next-day pickup. Learn more

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Product highlights

  • 300-feet hassle-free and reliable transmission range
  • 0.08s minimum latency for real-time monitoring
  • Built-in antennas for easy setup and efficient shooting
  • HDMI input and loopout on transmitter unit
  • Dual HDMI outputs on receiver unit
  • Multi-functional clickable thumbwheel switch menu
  • Side OLED provides easy access to various functions
  • Supports up to 3 devices for real-time monitoring
  • Firmware update and channel scan on HollyView App
  • Supports 5-12V power supply or USB Type-C charging

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Free standard shipping included

Hollyland Mars 300 Pro Dual HDMI 300-Feet Wireless Video Transmission System (Enhanced)

The Hollyland Mars 300 Pro offers up to 300-feet hassle-free and reliable range for wireless video and audio transmission with 0.08s latency for real-time monitoring. The transmitter unit comes with an HDMI input and loopout, while the receiver unit comes with two HDMI outputs. Built-in antennas allow for easy setups, efficient shooting, and different shooting applications. The system provides a better user experience with the multi-functional clickable thumbwheel switch. Plus, the side OLED provides easy access to power status, channel scan, and other OLED display information for both vertical as well as horizontal installation methods. Both transmitter and receiver units support 5-12V wide voltage power supply, including various L-Series batteries, different power banks, and USB Type-C (5V/2A) charging. The system supports real-time monitoring on up to three devices with Pro monitor features, such as Waveform, Focus Peaking, Zebra, ZOOM, 3D Luts, and more. This Enhanced Hollyland Mars 300 Pro Dual HDMI Wireless Video Transmission System offers an anti-collision design on the transmitter unit and comes with external antennas for complex shooting environments.


Configuration Core
Pack Size Single Bundle
Weight Transmitter Weight: 0.4 lb / 172.5g, Receiver Weight: 0.3 lb / 128.5 g
Color Black
Mount Type 1/4"-20 Female
Video Connectors 2 x HDMI Output
Video Input HDMI
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 300 Pro Dual HDMI 300-Feet Wireless Video Transmission System (Enhanced)

Hollyland Mars 300 Pro Dual HDMI 300-Feet Wireless Video Transmission System (Enhanced) SKU: HL-M300-PRO-EHD

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