Hollyland COSMO C1 1000ft Wireless SDI/HDMI Transmission System

Hollyland COSMO C1 1000ft Wireless SDI/HDMI Transmission System

Product Code: COSMO C1

Hollyland Cosmo C1

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• As low as 0.04ms Latency
• 1,000ft Wireless Transmission Range (LOS)
• Supports Smart Channel Switching
• Transmitter Supports SDI Input, HDMI Input, and SDI Loopout.
• Receiver Supports 2*SDI Outputs and HDMI Output
• Supports DC Power Supply, Battery, and USB Type-C Power Supply
• Supports UVC Pull-stream

Hollyland Cosmo C1 is a new member of the COSMO series, transformed by Hollyland’s HEVO wireless transmission technology, COSMO CI offers a new standard for real-time video monitoring up to 1,000ft line-of-sight. Boosted signal strength and superior anti-interference capability in the 5.1GHz- 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 to the next level.

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. 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
HEVO, Fast, Stable, and Smart

HEVO 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 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.

All You Need Is a USB-C Cable

HEVO embeds UVC (USB Video Capture) into COSMO C1. It simply takes one USB-C to pass 1080P60 HD video quality to your computer for direct live streaming. No video capture device needed, no additional settings. It just works!

HDMI&SDI In/Out + SDI Loop out

COSMO C1 allows HDMI & 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 to work on. Your deal search ends here, period.

Battery Low Indicator

COSMO CI has low battery indicator in red is here to remind you 20 minutes in advance of a dying battery. No more last-minute panic.

Vertical & Horizontal Mount Design

More mounting methods are available on both the transmitter and receiver in COSMO C1. 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″-20 threaded hole erects the unit on any tripods.

Three Power Supply Options

Hollyland COSMO C1 comes with 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.

Patented Ball Catch Design

The patented ball catch design on the backplane can hold the NP-F series batteries firmly in place. Be rest assured of a steady power supply.

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Transmitter Receiver
Interfaces Antenna Interface (RP-SMA Male)

HDMI Input (Type A Female)

SDI Input

SDI Loopout

DC Input

USB Type-C

Antenna Interface (RP-SMA Male)

HDMI Input (Type A Female)

SDI Output*2

DC Input

USB Type-C

Power Supply DC Power Input:6~16V

USB Type-C Power Supply:5V/2A

Battery Power Supply:6-16V

DC Power Input:6~16V

USB Type-C Power Supply:5V/2A

Battery Power Supply:6-16V

Power Consumption <9W <9W
Weight 214g

(Without Exterior Antenna)


(Without Exterior Antenna)

Dimensions (L*W*H) 115*70*32mm

(The Battery Plate Exclude)

(L*W*H) 115*70*32mm

(The Battery Plate Exclude)

• Transmitter X1
• Receiver X1
• Antenna X4
• Mushroom Antenna X2
• Cold Shoe X1
• Peasecod Pan-tilt with Cold Shoe X1
• Type-C Converter X1
• DC Adapter X1
• User Guide X1
• Warranty Card X1
• Expansion Accessory X1