Hollyland Cosmo C2 HDMI/SDI Wireless Video 2-Transmitter System HOLCOSC22
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Description
Description
Hollyland Cosmo C2 HDMI/SDI Wireless Video 2-Transmitter System HOLCOSC22
The Hollyland Cosmo C2 is a professional wireless video transmission system built around two transmitters and one receiver, making it suitable for multi-camera live production, broadcast, events and professional filming. It transmits video at resolutions up to 1080p60 and combines a long line-of-sight range with low latency, automatic frequency hopping and practical HDMI, SDI and streaming connectivity.

Key Features:
- Two transmitters and one receiver support a streamlined multi-camera production workflow.
- Transmits video at resolutions up to 1080p60 over a line-of-sight distance of up to 1,000 m under suitable conditions.
- Low latency of 33 ms helps production teams monitor video with minimal delay.
- HEVO 2.0 technology detects frequency interference and switches to a cleaner channel automatically.
- HDMI and 3G-SDI connectivity supports a wide range of professional cameras, monitors and production equipment.
- UVC, RTMP and NDI HX3 support provides flexible options for computer-based and network video workflows.
- NP-F battery support on the transmitters and V-Mount battery support on the receiver provide practical location power options.
Two Transmitters, One Receiver
The 2TX and 1RX arrangement allows two camera feeds to work with a single receiver, reducing the number of receiving devices required in a multi-camera setup. This helps simplify cabling and supports better coordination between video sources during live production.

Long-Range, Low-Latency Transmission
The Cosmo C2 offers an advertised line-of-sight transmission range of up to 1,000 m, with latency starting at 33 ms. Actual performance may vary according to local regulations, obstructions, connected equipment and radio-frequency conditions.
HEVO 2.0 Frequency Hopping
Hollyland’s HEVO 2.0 technology monitors the surrounding wireless environment and seamlessly changes to a cleaner frequency channel when interference is detected. This helps maintain a more stable video signal in demanding production environments.

Flexible Live Streaming
The receiver supports UVC output for connection to a compatible computer using a suitable USB data cable, allowing the video feed to be used without a separate capture card. RTMP support enables direct streaming workflows, while NDI HX3 allows video to be incorporated into compatible network-based production systems through the receiver’s Ethernet connection.

HDMI and 3G-SDI Connectivity
Each transmitter provides HDMI and 3G-SDI inputs together with a 3G-SDI loop output. The receiver offers two HDMI outputs, two 3G-SDI outputs, USB-C and a 100 Mbps RJ45 Ethernet port, providing several ways to integrate the system with monitors, switchers, computers and network video equipment.

FPS Booster and Fractional Frame Rates
The receiver’s FPS Booster can convert compatible lower-frame-rate inputs, including 24p, 25p and 30p video, to a 60p output for smoother viewing. The feature is disabled by default and can be enabled when required. Support for fractional frame rates also makes the system easier to incorporate into established professional video workflows.
Versatile Power Options
The transmitters can run from a locking DC connection or compatible NP-F batteries, while the receiver supports locking DC power and compatible V-Mount batteries. Batteries are not listed among the supplied accessories.

Technical Specifications:
| Specification | Details |
|---|---|
| Brand | Hollyland |
| Model | Cosmo C2 |
| Retailer Product Code | HOLCOSC22 |
| Product Type | Professional wireless video transmission system |
| System Configuration | 2 transmitters and 1 receiver |
| Maximum Video Resolution | Up to 1080p60 |
| Transmission Range | Up to 1,000 m line of sight, according to Hollyland |
| Latency | 33 ms or greater |
| Operating Frequency | 5.15–5.85 GHz |
| Channel Bandwidth | 40 MHz |
| Wireless Technology | HEVO 2.0 with seamless frequency hopping |
| Transmitter Video Connections | 1 × HDMI 1.4b input, 1 × 3G-SDI input and 1 × 3G-SDI loop output per transmitter |
| Receiver Video Connections | 2 × HDMI 1.4b outputs and 2 × 3G-SDI outputs |
| Additional Connections | USB-C on transmitters and receiver; RJ45 100 Mbps Ethernet on receiver |
| Streaming Support | UVC, RTMP and NDI HX3 |
| Transmitter Input Formats | 720p59.94/60; 1080i50/59.94/60; 1080p23.98/25/29.97/30/50/59.94/60 |
| Receiver Output Formats | 720p50/59.94/60; 1080i50/59.94/60; 1080p23.98/24/25/29.97/30/50/59.94/60 |
| Transmitter Power | NP-F battery: 6.8–8.4 V; DC input: 6–16 V |
| Receiver Power | V-Mount battery: 11.8–16.8 V; DC input: 6–16 V |
| Power Consumption | Transmitter: less than 10 W; receiver: less than 11 W |
| Transmitter Dimensions | 114.8 × 69 × 35.5 mm |
| Receiver Dimensions | 142 × 87.2 × 33.2 mm |
| Transmitter Weight | 210 g each |
| Receiver Weight | 440 g |
What’s in the Box?
- 2 × Hollyland Cosmo C2 wireless video transmitters
- 1 × Hollyland Cosmo C2 wireless video receiver
- 7 × blade antennas
- 1 × USB-C OTG adapter
- 1 × 12 V/2 A DC power adapter
- 2 × cold shoes
- 2 × expansion accessories
- 1 × Cosmo C2 carrying case for the 2TX and 1RX kit
- 1 × warranty card
- 1 × compliance information card
- 1 × user manual
- 1 × packing list card
Build a more flexible multi-camera production workflow with the Hollyland Cosmo C2 and add the 2-transmitter system to your cart today.
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