Hollyland COSMO C2 HDMI/SDI Wireless Video 2-Transmitter System (2TX + 1RX)
US$ 17428.25
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Description
Hollyland COSMO C2 HDMI/SDI Wireless Video Transmission System (1TX + 1RX)The Hollyland COSMO C2 HDMI SDI Wireless Video Transmission System (1TX + 1RX) is a professional, broadcast grade wireless monitoring kit tailored for cinematography teams, live television directors, focus pullers, and demanding production sets. Building directly on the legacy of the Cosmo C1, the C2 system integrates Hollylands updated HEVO 2. 0 processing engine. This base 1TX + 1RX package establishes a rock solid single camera pipeline while
The Hollyland COSMO C2 HDMI/SDI Wireless Video Transmission System (1TX + 1RX) is a professional, broadcast-grade wireless monitoring kit tailored for cinematography teams, live television directors, focus pullers, and demanding production sets.
Building directly on the legacy of the Cosmo C1, the C2 system integrates Hollyland’s updated HEVO 2.0 processing engine. This base 1TX + 1RX package establishes a rock-solid single-camera pipeline while offering the unique scalability to expand into a multi-camera workflow (up to 2TX to 1RX) down the road without buying an extra receiver.
Key Technical Performance Features
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Expanded 3,000-Foot Wireless Radius: Powered by the HEVO 2.0 hardware protocol, the system transmits uncompressed Full HD video across an expansive 3,000 feet (1,000 meters) line-of-sight range, easily covering large sports arenas, deep film sets, or complex multi-floor venue architecture.
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Zero-Lag 33ms Monitoring Latency: Real-time data delay is kept to a near-imperceptible 33 milliseconds. Focus pullers can pull sharp focus on fast-moving subjects and directors can evaluate actor timing perfectly without a trailing delay.
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Adaptive Frequency Hopping (AFH): Operating on the 5.1 GHz to 5.85 GHz spectrum, the COSMO C2 actively scans for radio frequency (RF) clutter. If it detects heavy local Wi-Fi traffic or venue interference, it seamlessly transitions to the cleanest available channel without dropping frames or freezing the video feed.
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Dual-Interface (HDMI + 3G-SDI) Versatility:
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Transmitter (TX): Equipped with 1× HDMI input, 1× 3G-SDI input, and a dedicated physical 3G-SDI Loopout port so local camera operators can plug an on-camera monitor straight into the transmission block.
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Receiver (RX): Delivers dual signal distribution via 2× HDMI outputs and 2× 3G-SDI outputs to feed high-end production switchers, directors' cages, and client multi-view monitors simultaneously.
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UAC Web Camera Mode: The receiver includes a plug-and-play USB-C output supporting USB Audio Class (UAC) and USB Video Class (UVC). This lets you feed the wireless video line directly into a computer as a webcam source for instant live streaming via OBS Studio, Zoom, or vMix without requiring an external capture card.
Hardware Technical Specifications Matrix
| Feature Component | COSMO C2 (1TX + 1RX) System Specifications |
| System Baseline Layout | 1 × Wireless Video Transmitter (TX) | 1 × Wireless Video Receiver (RX) |
| Wireless Core Transmission | HEVO 2.0 Technology (5.15 GHz to 5.85 GHz Frequency Range) |
| Video Resolution Depth | Up to 1080p Full HD at 60 frames per second |
| Signal Processing Latency | Ultra-low 33 milliseconds |
| Max Line-of-Sight Range | Up to 3,000 feet (1,000 meters) |
| Transmitter I/O Trays | 1× HDMI 1.4b In | 1× 3G-SDI In | 1× 3G-SDI Loopout |
| Receiver I/O Trays | 2× HDMI 1.4b Out | 2× 3G-SDI Out | 1× USB-C (UVC/UAC Output) |
| Device Power Interface | Integrated Sony NP-F Battery Plates | 2.0mm Locking DC Barrel Inputs |
| Chassis Mechanical Build | CNC-Machined Aerospace-Grade Aluminum Alloy |
What's In The Box?
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1 × COSMO C2 Wireless Video Transmitter (TX)
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1 × COSMO C2 Wireless Video Receiver (RX)
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4 × High-Gain Omnidirectional Whip Antennas
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2 × Mushroom Antennas (optimized for short-range, heavy-interference sets)
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1 × 12V / 2A DC Power Supply Adapter (for stationary monitoring desks)
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1 × Articulating Magic Arm Mount
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1 × Cold Shoe Mount Adapter
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1 × Heavy-Duty Rugged Carrying Case with Laser-Cut Custom Protective Foam
Intelligent Power Redundancy: Both units support a flexible 6V to 16V DC input voltage envelope alongside their native Sony L-Series (NP-F) battery plates. When rigged onto pro-tier camera packages, you can run a standard D-Tap to locking barrel cable straight from your master V-Mount or Gold-Mount system block. This safeguards the wireless feed with constant power and keeps the overall camera rig lightweight.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.1 ★★★★★
Based on 1490 reviews
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Product Reviews
★★★★★ 3
Lightweight divider that works well for video call backgrounds
Size: 1 Panel
This divider works fine for what it is, but it’s definitely on the lightweight side.
Setup was very easy and only took a few minutes. The frame is fairly light, so it’s easy to move around or reposition if needed. That said, the tradeoff is that it’s not especially sturdy. It stands fine on its own but I wouldn’t expect it to handle much bumping or movement.
I mainly bought it to use as a background for Zoom calls when I’m working from my den, and for that purpose it works great. The fabric panel blocks the room behind me and gives a cleaner background on camera.
It’s not huge though. To keep the camera from seeing around it, I have to position it directly behind my chair. If you’re expecting it to divide a large room or create a big privacy barrier, it may feel a bit small.
Overall, it does the job and works well for temporary setups or video call backgrounds, but the lightweight frame keeps it from feeling like a premium divider.
The product description and photos are accurate.
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Reviewed in the United States on March 12, 2026
★★★★★ 2
Sent Wrong Pieces
Size: 1 Panel, Size: 1 Panel
I really, really wanted to like this - and, in theory, I really, really should have! The instructions were easy to follow and assembly took about five minutes. The assembled screen is lightweight and easy to move. It was a great size and exactly what I was looking for except....I wasn't sent the correct pieces. Instead of receiving 4 elbow pieces and 4 feet, I received 2 elbow pieces and 8 feet - meaning that the bottom part of the fabric just hangs there and, overall, the divider is extremely unstable because there is no horizontal support on the bottom. Thankfully, there are Velcro tabs on the side of the fabric so I can use it if I don't plan to move it even 1 cm, but otherwise, what I received is not usable for what I needed it for. Additionally, the fabric is made of polyester and catches animal hair very easily. Had I received the correct pieces, this would be a good buy for the money. Unfortunately, overall, I'm disappointed.
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Reviewed in the United States on February 28, 2026
★★★★★ 5
Works great, keeps the light out of my eyes and easy to put together
Size: 1 Panel, Size: 1 Panel
I got this room divider in and it works great. It’s really easy to put together you don’t even need tools. I really like that it’s not see through, it’s not a black out curtain but it keeps light out pretty good.
I absolutely hate my bedroom layout there’s no bathroom door. My girlfriend and I have different work schedules so I’m trying to sleep while she’s getting ready for work and the light shines right in my eyes. This divider keeps the light out of my eyes and that’s exactly what I was hunting for. I also like that you can adjust the length. I took one of the bars out to make it a little shorter and it worked great.
I would recommend this room divider.
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Reviewed in the United States on February 26, 2026
★★★★★ 5
Good product, poor directions.
Color: Black, Size: B-88''W-4 Panel
The quality of the product was better than most at this price. The directions could have been much better even though I have an engineering background.
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Reviewed in the United States on September 1, 2025
★★★★★ 4
Nice partition for my basement
Color: Beige, Size: B-102''-3 Panel
This 3-panel room divider showed up well-packaged with all the parts and even a little tool for putting it together. The instructions were easy to follow, and while one person can definitely assemble it, having two makes it quicker and less frustrating.
It does exactly what I needed—gives quick, easy coverage in an open area. I'm using it in my basement to hide the furnace and water heater, and it works great for that. It looks nice overall, but I picked the beige fabric (which is really more of a tan), and the black frame makes it stand out more than I’d like. A white or lighter frame would’ve blended better. Not sure that I would use it anywhere besides the basement
It’s lightweight and pretty sturdy. The wheels make it easy to move, but it does get a bit wobbly, and the panel clips need to be readjusted every time you roll it somewhere new. Still, for the price, it’s a solid buy. I’m happy with it and planning to order another one.
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Reviewed in the United States on June 21, 2025