Hollyland COSMOC2TX&1RX HDMI/SDI Wireless Video 2-Transmitter System
SKU: 34452128757

Hollyland COSMOC2TX&1RX HDMI/SDI Wireless Video 2-Transmitter System

Sale price$818.55 Regular price$909.50
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Description

Hollyland COSMOC2TX&1RX HDMI/SDI Wireless Video 2-Transmitter SystemThe Cosmo C2 HDMI SDI Wireless Video 2 Transmitter System from Hollyland allows you to wirelessly transmit high resolution video up to 1080p60 over long distances up to 3000' using two transmitters to a single receiver, allowing flexible video monitoring and distribution for your studio or field production. This kit comprises two transmitters and a receiver that communicate over the 5. 1 to 5. 85 GHz wireless frequency range. Additional improvements

The Cosmo C2 HDMI/SDI Wireless Video 2-Transmitter System from Hollyland allows you to wirelessly transmit high-resolution video up to 1080p60 over long distances up to 3000' using two transmitters to a single receiver, allowing flexible video monitoring and distribution for your studio or field production. This kit comprises two transmitters and a receiver that communicate over the 5.1 to 5.85 GHz wireless frequency range. Additional improvements to the series include HEVO 2.0 technology, UVC/RTMP/NDI|HX streaming support, and expanded power options.

Strong Signal Strength, Seamless Frequency Hopping

The Cosmo C2 can transmit 1080p60 video up to 3000' line-of-sight with a low 33 ms latency. The system operates on the 5 GHz frequency band, automatically detecting surrounding frequency interference and seamlessly switching to a clean channel via HEVO 2.0 technology. This makes for an uninterrupted transmission signal.

Connectivity

The transmitters feature one HDMI input, one SDI input, and one SDI loop output.

The receiver features two HDMI outputs, two SDI outputs, and an RJ45 Ethernet port.

USB-C ports on all the units allow you to connect to the included USB-C OTG adapter and your personal computer for UVC streaming.
RTMP and NDI|HX Streaming

The Cosmo C2 unlocks RTMP streaming for direct live streaming to YouTube, Twitch, and other platforms. The receiver unit supports NDI|HX protocol, transmitting video streams via a single network cable for a cleaner production space.

FPS Booster, Fractional Frame Rate

Using a frame rate compensation algorithm, the Cosmo C2 receiver can convert low frame rate inputs like 1080p24/25/30 to high frame rate outputs at 1080p60, making smoother visuals. The Cosmo C2 can also transmit HDMI/SDI fractional frame rate input/output signals to ensure flexibility while filming

Frozen Frame

If your transmission is interrupted, Cosmo C2 can freeze the last frame of your feed, effectively preventing the display of the manufacturer's logo. There is also the option to customize the logo image if you prefer to use a USB flash drive for a more professional appearance.

Versatile Power and Mounting Options

Each unit can be powered via DC input using the included power supply when working on set. In field applications or in studio spaces with limited outlets, both units offer battery plate options. The transmitters feature an L-series battery plate, and the receiver features a V-mount battery plate for higher-capacity power sources. Use the 1/4"-20 threads on the units or the cold shoe adapter to secure them to the mounting configurations of your choice.

Features

  • Wireless Video Transmitter/Receiver Set
  • Transmitters: HDMI/SDI In, SDI Loop Out
  • Receiver: 2 HDMI/SDI Outputs
  • 3000' Line-of-Sight 1080p60 Transmission
  • 5.1 to 5.85 GHz Frequency Bands
  • Supports UVC, RTMP & NDI|HX Streaming
  • FPS Booster Converts Frame Rates
  • HEVO 2.0 Technology, 33 ms Latency
  • DC Input, L-Series/V-Mount Battery Plate

Specifications

Inputs/Outputs
Antenna I/O
Transmitter/Receiver: 2x RP-SMA
Video I/O
Transmitter: 1x HDMI 1.4b Input
Transmitter: 1x BNC (3G-SDI) Input
Transmitter: 1x BNC (3G-SDI) Loop Output
Receiver: 2x HDMI 1.4b Output
Receiver: 2x BNC (3G-SDI) Output
Embedded Audio
HDMI/SDI
Audio I/O
No
Power I/O
Transmitter/Receiver: 1x Barrel Input
Other I/O
Transmitter/Receiver: 1x USB-C
Receiver: 1x RJ45 (10/100 Ethernet)
Encryption
No,
Wireless
Wireless Range
3000' / 914.4 m
Channel Bandwidth
40 MHz
Frequency Range
5.1 to 5.85 GHz
Latency
33 ms
RF Power
< 23 dBm
RF Sensitivity
-90 dBm
Wi-Fi
Yes
Bluetooth
No
Mobile App Compatible
No
Cellular Support
No
Format Support
Video Format
HDMI/SDI
1080p: 60/59.94/50/30/29.97/25/24/23.98
1080i: 60/59.94/50
720p: 60/59.94/50
Audio Format
Not Specified by Manufacturer
Timecode Support
No
Power
Input Power
6 to 16 VDC
Battery
Receiver: 1x V-Mount on Fixed Plate
Transmitter: 1x L-Series Mount on Fixed Plate
Power Consumption
Transmitter: 10 W
Receiver: 11 W
Mounting
Tripod/Accessory Mounting
Receiver/Transmitter, Bottom
1x 1/4"-20 Female
General
Status Display
On Receiver Only
Environmental Resistance
No
Dimensions
Transmitter: 4.5 x 2.7 x 1.4" / 114.8 x 69 x 35.5 mm
Receiver: 5.6 x 3.4 x 1.3" / 142 x 87.2 x 33.2 mm
Weight
Transmitter: 7.4 oz / 210.00 g
Receiver: 15.5 oz / 440.00 g
Packaging Info
Package Weight
7.02 lb
Box Dimensions (LxWxH)
16.6 x 14.5 x 7"
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 34452128757

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4.9 ★★★★★
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Product Reviews
J
Verified Purchase
Jennifer
Lowell, US
★★★★★ 4
Long lasting
Color: Dogwood & Calming, Size: Medium
My dogs love these bones.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
K
Verified Purchase
Kelli Thornburg
Fort Morgan, US
★★★★★ 5
Puppy loves these sticks!
Color: Dogwood & Calming, Size: Medium
Dogs love these sticks! Must smell and taste like real wood because it keeps my puppy from bringing real sticks in the house from outside. She is a heavy chewer and these sticks keep her occupied. We are on our 2nd set.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
C
Verified Purchase
C. H.
Louisville, US
★★★★★ 5
Great value for the price, highly recommend
Color: Dogwood & Calming, Size: Medium
Our dog loves these and chews them down to nothing. They are a great value for the money and the use your dog gets out of them. The size is just right for our doberdor.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
L
Verified Purchase
LC
Boise, US
★★★★★ 3
Our dog loves it but it wasn’t durable enough to last
Color: Dogwood Jack, Size: Large, Color: Dogwood Jack, Size: Large
Our lab took to it as soon as we gave it to her. Perfect size for our 80 lb yellow lab. However, now that it’s in about 10 days, she’s able to break off chunks from this bone that are dime size or larger, and we have to throw it away
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
M
Verified Purchase
Matthew Anderson
Boise, US
★★★★★ 5
No problems after a year and a half
Color: Dogwood & Calming, Size: Medium
Have been regularly buying these for my corgi for about a year and a half. The 2 pack lasts about a month or 2 each time. Pieces break off in small enough pieces that they safely pass through his digestive system. He gnaws each one down to about 1/4 the original size before we take it away and give him a new one. He continues to have regular bowel movements and has a healthy appetite so I can’t imagine any problems arising after so long. I have tried other alternatives and every other similar chew breaks off in larger pieces and didn’t feel comfortable letting him chew/eat them. I noticed there are a few 1 star reviews saying their dogs got sick off these but after a year and a half I have had 0 issues with this product. I guess it depends on the dog and how big of pieces they are swallowing. My dog ingests pieces about the size of a grain of rice so just pay attention and you should be fine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026

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