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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4.3 ★★★★★
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Product Reviews
G
Verified Purchase
GRohloff
West Palm Beach, US
★★★★★ 4
Keeps her busy!
Color: Medium size (5.9")
Our Molly loves this. Only thing is that it is a little too big for our Maltipoo, but she still tries to keep up with it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
A
Verified Purchase
Amazon Customer
Pawtucket, US
★★★★★ 5
Tough
Color: Medium size (5.9")
So far my dog hasn’t destroyed it! And it’s been a month. So I call that a win. Plus he loves it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
J
Verified Purchase
J. Rogers
Los Angeles, US
★★★★★ 5
This is a great ball for high energy dogs.
Color: Blue
I have a Belgian Malinois, so you can imagine the Maligator jaws. Just opened this today and let her play with it indoors. She LOVES IT. It wore her out and it’s a toy she can really stay focused on without needing me to throw or roll for her. It moves on its own! I supervised her play. I was hoping it was too big to get under the couch, but no. It goes right under it. I had to block off the gap so I didn’t have to keep getting it out from under for her. The outter “shell” is very durable! When she had resting moments, she chewed it pretty good - I could hear the material squeaking against her teeth. I was worried she was tearing it up, but nope! Not a mark on it. It’s easy to set up and operate. It needed charging before play. After hours of play, she was able to somehow unscrew the outter shell. This concerned me bc the smaller, inner ball mechanism came out but I saw it right away and was able to put it back together. So, make sure it’s screwed together tightly (which I thought I had done without breaking it) and check it from time to time to make sure it hasn’t loosened. This is a great ball for her incredible high energy drive. It gives her the work and fun play she needs to get tired, which I love. This toy is on the expensive end, but so far it’s worth it. Now we’ll see how long it lasts!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 7, 2025
C
Verified Purchase
Carol D
Birmingham, US
★★★★★ 5
Love love it
Color: Blue
Best dog toy ever. I have a 1 year old boxer who is full of energy (understatement). This ball has provided more entertainment for us both than any dog toy I’ve ever purchased. Charge holds well and has a very resilient shell. I love it. Worth the price.
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Reviewed in the United States on May 23, 2026
M
Verified Purchase
Megan
New York, US
★★★★★ 4
Great ball for limited entertainment. Replaceable outer shell is an amazing option!
Color: Blue, Color: Blue
Bought this for our 45lb, ball-obsessed Dutch shepherd/pit bull dog mix. I had one of these years ago with the hard shell and couldn’t be happier with the new foam shell. The new foam shell is much quieter and while our dog might put holes in it with his teeth, he doesn’t seem to ever pull pieces off. For engagement level, he found it VERY interesting at first and was scared to grab it, but once he got over that he started holding it in his mouth even when it shakes and just tries to keep it. Isn’t the best for fetch or anything as he has trouble letting it go when it is actively moving, but it makes him happy while he has it. We just make sure to monitor him while it is out. The ability to change the outer shell and just buy a replacement for the shell instead of a whole new toy is a lovely feature that makes me very happy to continue buying from this company.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026

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