Hollyland Cosmos C2 HDMI/SDI Wireless Video 2-Transmitter System (2TX + 1RX)

Redefine Reliability: The Ultra-Long Range Multi-Cam Powerhouse

The Hollyland Cosmo C2 is a professional-grade wireless video solution engineered for high-stakes production environments that demand absolute stability. Featuring a powerful 2-transmitter-to-1-receiver configuration, this system drastically reduces equipment footprints and cable clutter while ensuring perfect synchronization between video feeds. Whether you are a broadcaster managing Electronic Field Production (EFP), a wedding videographer capturing multiple angles, or a house of worship looking to professionalise your livestream, the Cosmo C2 provides the precision and range required to deliver flawless 1080p60 video every time.

HEVO 2.0: Uninterrupted Signal in Crowded RF Spaces 
At the heart of the Cosmo C2 is the self-developed HEVO 2.0 technology, which redefines wireless reliability. This system automatically detects surrounding frequency interference and performs seamless frequency hopping to the cleanest available channel in the 5.1–5.85 GHz range. For the professional on set, this translates to an immersive, uninterrupted monitoring experience, even in environments saturated with competing wireless signals.

Massive Range with Near-Zero Latency 
The Cosmo C2 boasts an industry-leading 1,000m (3,000ft) line-of-sight range, making it the ideal studio workhorse for large venues, stadium concerts, and complex architectural spaces. Despite this massive distance, it maintains a super-low latency of just 33ms. This instantaneous response ensures that what you see on the monitor is exactly what is happening in front of the lens, providing directors and focus pullers with the real-time accuracy they need for critical decision-making.

Streamlined Workflow with NDI and UVC Integration 
Beyond simple transmission, the Cosmo C2 is a versatile streaming tool. The receiver supports NDI|HX protocol, allowing high-quality video to be transmitted over a single network cable for a cleaner, modern production space. Additionally, built-in UVC support allows you to connect the receiver directly to a computer via USB-C for plug-and-play streaming to platforms like YouTube and Twitch without the need for external capture cards.

Main features:

• 2TX to 1RX configuration to reduce device count and ensure perfect video synchronisation
  
• 1,000m (3,000ft) line-of-sight range suitable for large venues and complex architectural spaces
  
• 33ms ultra-low latency maintained across extended transmission distances
  
• HEVO 2.0 technology with intelligent frequency hopping to bypass wireless interference
  
• NDI|HX3 protocol support on the receiver for streamlined, network-based production workflows
  
• UVC plug-and-play streaming to computers via USB-C without requiring external capture cards
  
• RTMP streaming compatibility for direct broadcasting to platforms like YouTube and Twitch
  
• FPS Booster algorithm to convert low frame rate inputs into smooth 60P visual outputs
  
• Dual HDMI and 3G-SDI ports for broad connectivity and SDI-to-HDMI cross-conversion flexibility
  
• 3G-SDI loopout on transmitters for seamless local monitoring on set
  
• Fractional frame rate support to meet specific professional filming and broadcast requirements
  
• Frozen frame feature that hides signal loss and supports custom logo uploads for a professional look
  
• Flexible power through DC input, L-series batteries for transmitters, and V-mount for receivers
  
• 5.1 to 5.85 GHz operating frequency for robust and stable wireless performance
  
• Integrated status display on the receiver for real-time monitoring of critical system settings

Tech Specs:

• Video Inputs (RX): 1x HDMI 1.4b, 1x 3G-SDI, 1x 3G-SDI Loopout
  
• Video Outputs (TX): 2x HDMI 1.4b, 2x 3G-SDI, 1x RJ45 (NDI|HX Support)
  
• HDMI Resolutions: 1080p (60/59.94/50/30/29.97/25/24/23.98), 1080i (60/59.94/50), 720p (60/59.94/50)
  
• SDI Resolutions: 1080p (60/59.94/50/30/29.97/25/24/23.98), 1080i (60/59.94/50), 720p (60/59.94/50)
  
• Latency: 33ms
  
• Transmission Range: 1,000m (3,000ft) LOS
  
• Broadcast Mode Support: Optimized for EFP, including Fractional Frame Rate & FPS Booster
  
• Frequency Bands: 5.1 to 5.85 GHz
  
• Bandwidth: 40 MHz
  
• Technology: HEVO 2.0 with Seamless Frequency Hopping
  
• Power Options: DC Input (Locking), NP-F L-Series Battery (TX), V-Mount Battery (RX), USB-C OTG
  
• DC Voltage Range: 6V – 16V
  
• Power Consumption: (TX) < 10W; (RX): < 11W
  
• Display: Integrated Status Display (Receiver)
  
• Construction: Professional-grade durability for field and studio use
  
• Weight (TX/RX): 210 / 440g
  
• Dimensions (TX/RX): 114.8 x 69 x 35.5 mm / 142 x 87.2 x 33.2 mm
  
• Explore Hollyland video transmitters [Cosmos 2]: https://www.hollyland.com/product/cosmo-c2