Hollyland Cosmo C1 Wireless SDI/HDMI Transmission System

Brand New in Original Packaging
HL-COSMOC1
Features
  • As low as 40ms transmission latency
  • 1000-feet wireless transmission range (LOS)
  • Supports smart channel selection
  • Transmitter supports SDI input, HDMI input, and SDI loop out
  • Receiver supports 2 SDI outputs and HDMI output
  • Supports DC power supply and battery
  • Supports USB Type-C power supply
  • Supports UVC Pull-streaming
What's in the Box
  • Hollyland Cosmo C1 Wireless SDI/HDMI Transmission System
  • Transmitter
  • Receiver
  • 4 x Antenna
  • 2 x Mushroom Antenna
  • Cold Shoe
  • Peasecod Pan-Tilt with Cold Shoe
  • Type-C Converter
  • DC Adapter
  • Expansion Accessory
  • User Manual
  • Limited 1-Year Warranty
Item Description

This new member of the Cosmo series, the Hollyland Cosmo C1 Wireless SDI/HDMI Transmission System has been transformed by Hollyland's HEVO wireless transmission technology. It offers a new standard for real-time video monitoring up to 1,000 feet of line-of-sight. Boosted signal strength and superior anti-interference capability in the 5.1GHz to 5.8GHz frequency spectrum guarantee buttery smooth video transmission in complex environments. Industry-first to integrate UVC (USB Video Capture) interface, Cosmo C1 offers a whole simplified solution to stream and cloud-share your video works. It's the new go-to choice to step up your content production teams.

No Flickering, No Black Screen

HEVO, a solution embedded with adaptive frequency hopping (AFH) and seamless retransmitting technology, brings exceptional reliability, boosted signal strength, and superior anti-interference performance. You can now say goodbye to screen flickerings, screen pauses, and black screens throughout the production. With this level of anti-interference performance, it still allows 4 sets of video transmission systems to work at one location without compromising their smooth video delivery.

Channel Switching, You'll Never Feel It

EVO completes each synchronous frequency hopping in 0.001s at both receiving and transmitting ends that ensures picture integrity at the instant of frequency switching. Whether in manual or auto-switching mode, your live streaming and production monitoring will no longer suffer black screens. Cosmo C1 has already completed thousands of channel switching when on-location directors or remote clients are monitoring the production in environments with complex wireless signals.

HEVO for Ultra-Low Latency

HEVO, based on Hollyland's self-developed protocol, improves coding efficiency by 30 percent. The acceleration module embedded in Cosmo C1 achieves an ultra-low latency of as low as 40ms. There is no compromise on image output and transmission latency within the 1,000-feet LOS range. Designed for precise follow focus and high image clarity, Cosmo C1 is a silver bullet for videographers and focus pullers. Say Hi to a whole new level of the smooth viewing experience.

HDMI and SDI In/Out + SDI Loopout

Cosmo C1 allows HDMI and SDI connections on both the TX and RX unit, plus an SDI loop-out on the TX. It can work with any mainstream camera, monitor, or switcher you happen.

Vertical and Horizontal Mount Design

More mounting methods are available on both the transmitter and receiver. The cold shoe mounting design at the front allows fixing and laying the unit horizontally, ideal for evening out the weight for balancing setup on camera and stabilizers, while the 1/4-inch-20 screw hole erects the unit on any tripods.

Three Power Supply Options

Three power supply options to escort in different shooting scenes. DC power supply is more suitable for use in an indoor project, while the L-series battery and USB-C port make the unit portable for your run and gun missions.

Specifications

Hollyland Cosmo C1 Wireless SDI/HDMI Transmission System


General Specifications

  • Range: 1000 feet
  • Code rate: 12mbps
  • Live streaming: Embedded UVC
  • Auto frequency hopping: Yes
  • Channel scan: Yes (Rx)
  • App monitoring: No
  • Power option: L-series battery, USB Type-C power source, 12V DC power source

Transmitter

  • Interfaces:
    • Antenna interface (RP-SMA Male)
    • HDMI Input (Type A Female)
    • SDI Input
    • SDI Loop out
    • DC Input
    • USB-C
  • Power supply:
    • DC Power input: 6 to 16V
    • USB-C power supply: 5V/2A
    • Battery power supply:6 to 16V
  • Power: <9W
  • Weight: 214 g (Without exterior antenna)
  • Dimensions (L x W x H): 115 x 70 x 32 mm (battery plate excluded)
  • Input/output video format:
    • HDMI:
      • 480p60576P50720p50/59.94/60
      • 1080i50/59.94/60
      • 1080p23.98/24/25/29.9/301080p50/59.94/60
    • SDI:
      • 1080p60/59.94/50 (Level A)
      • 1080p60/59.94/50 (Level B)
      • 1080i60/59.94/50
      • 1080p30/29.97/25/24
      • 23.981080psf25
      • 720p60/59.94/50
      • 1080psf24/23.98
  • Frequency: 5.1 to 5.8 GHz
  • Transmission power: Maximum 22dBn
  • Receiver sensitivity: -
  • Transmission latency: As low as 40ms
  • Bandwidth: 20MHz

Receiver

  • Interfaces:
    • Antenna interface (RP-SMA Male)
    • HDMI Input (Type A Female)
    • SDI Input x 2
    • DC Input
    • USB-C
  • Power supply:
    • DC Power input: 6 to 16V
    • USB-C power supply: 5V/2A
    • Battery power supply: 6 to 16V
  • Power: <9W
  • Weight: 210 g (Without exterior antenna)
  • Dimensions (L x W x H): 115 x 70 x 32 mm (battery plate excluded)
  • Input/output video format:
  • HDMI:
    • 480p60
    • 576p50
    • 720p50/60
    • 1080i50/60
    • 1080p23.98/24/25/29.9/301080p50/59.94/60
  • SDI:
    • 1080p60/50 (Level A)
    • 1080i60/50
    • 1080p30/25/24
    • 1080psf25/24
    • 720p60/50
  • Frequency: 5.1 to 5.8 GHz
  • Transmission power: -
  • Receiver sensitivity: -80dBm
  • Transmission latency: As low as 40ms
  • Bandwidth: 20MHz

Shipping

Shipping is free within the continental United States (lower 48 states only). Rates include handling and insurance.

Domestic Shipping

Lower 48 States: Free shipping, including handling and insurance.
Alaska, Hawaii, Puerto Rico, U.S. Territories, APO & FPO: Additional shipping charges may apply, and some items cannot be shipped to these locations. Please use the Shipping and Payments tab with your ZIP code to confirm availability and view exact costs. Free shipping applies only to the lower 48 states.

International Shipping

All international orders are processed through eBay’s Global Shipping Program. Please see the Shipping tab for detailed costs and available options.

Restrictions

Orders cannot be shipped to hotel addresses at this time.

Payment

We accept major credit cards and PayPal; however, American Express is not supported on this platform. All payments are securely processed through eBay’s managed payment system. Immediate PayPal payment is required for all Buy It Now purchases, while payments for Best Offers are due within 3 days. If you need special payment arrangements, please contact us via eBay messages.

Please note that payments cannot be modified once an order is submitted or fulfilled, so any issues must be resolved beforehand. For payment-related questions or assistance, contact eBay customer support directly

Returns

We want you to be happy with your purchase. If you're not satisfied, you may return your item within 30 days of delivery. Please contact us via eBay messages or the returns link to obtain an RMA number.

Domestic Purchases

  • If you wish to return an item, please contact us via eBay messages or the returns link to obtain a Returned Merchandise Authorization (RMA) number. This ensures proper handling of your return or replacement.
  • To qualify for a full refund (less shipping expenses), the item must be in its original new condition, with all packaging, manuals, and paperwork intact and unaltered. Opened items are eligible for return but may be subject to a restocking fee.
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  • All returns are subject to inspection. Items must be in brand new condition as described above. If not, the return may be deemed non-refundable or subject to a restocking fee of at least 15%. Missing accessories or signs of wear may result in higher restocking fees. For specific fee details, please contact us via eBay messages.
  • Returns must be packed in an outer shipping carton (not just the original product box), with the RMA number clearly marked on the shipping label. Include a copy of your invoice and order number, and insure your return shipment with prepaid shipping. We do not accept COD shipments.
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Promotional Items

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Other Issues

  • For warranty claims, lost merchandise, transit issues, or order cancellations, please contact us via eBay messages. In the event of a price or description error, we will notify you promptly. You will have no obligation to proceed with the purchase, and any amount charged will be fully refunded.

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