Description
Hollyland Cosmo C2 HDMI/SDI Wireless Video Transmitter System: Zero-Latency Wireless Monitoring for Professional Production
The Hollyland Cosmo C2 HDMI/SDI Wireless Video Transmitter System is a next-generation wireless video solution engineered for professional filmmakers, broadcast crews, and live production teams who demand reliability, ultra-low latency, and high-quality image transmission. With dual HDMI/SDI interfaces, advanced anti-interference technology, and a robust wireless range, the Cosmo C2 brings exceptional stability and flexibility to every production environment — whether on set, on stage, or in the field.
Professional-Grade Wireless Video Transmission
The Cosmo C2 delivers zero-latency (<40ms) wireless transmission of Full HD 1080p60 video, ensuring real-time monitoring without compromise. Its dual-band 5.1–5.9GHz frequency range uses adaptive channel scanning and dynamic frequency hopping to maintain a clear, stable connection even in congested environments. With a line-of-sight range of up to 1,000 feet (300 meters), the Cosmo C2 is ideal for film sets, live broadcasts, multi-camera productions, and Steadicam or gimbal operations.
- Transmission Range: Up to 1,000 ft (300 m) line-of-sight
- Latency: Less than 40ms for near-instant video feedback
- Resolution Support: Full HD 1080p60
- Frequency Band: 5.1–5.9GHz adaptive frequency hopping for interference-free transmission
Dual HDMI and SDI Input/Output for Versatile Integration
Designed for professional workflows, the Cosmo C2 features both 3G-SDI and HDMI input/output, supporting integration with a wide range of cameras, monitors, and switchers. The transmitter includes one HDMI and one SDI input, while the receiver provides matching outputs, making it compatible with cinema cameras, DSLRs, broadcast rigs, and wireless director’s monitors. The system supports embedded audio transmission, ensuring your video and sound stay perfectly in sync.
- Inputs (TX): 1 × HDMI, 1 × 3G-SDI
- Outputs (RX): 1 × HDMI, 1 × 3G-SDI
- Cross-Compatibility: Works seamlessly across multiple camera and monitor systems
- Embedded Audio Support: Delivers synchronized video and audio feeds
Intelligent Signal Management and Monitoring
The Cosmo C2’s advanced signal processing engine features Smart Channel Scan, allowing users to visualize the real-time interference level and manually or automatically select the cleanest channel. This ensures consistent signal strength and reliability, even in crowded RF environments such as events or multi-crew film sets. The OLED display on both transmitter and receiver units provides at-a-glance system status, including channel selection, signal strength, resolution, and battery life.
- Smart Channel Scan: Monitors RF environment for optimal channel selection
- OLED Display: Real-time feedback for settings, battery, and signal information
- Automatic Reconnection: Instantly recovers lost signal when moving between locations
- Stable Encryption: AES-128 encryption for secure video transmission
Built for Reliability and Field Durability
Constructed from aerospace-grade aluminum alloy, the Cosmo C2 is rugged yet lightweight, designed to withstand the physical demands of professional use. With multiple power options, including L-series battery plates, D-Tap power input, and USB-C, the system integrates seamlessly into any production setup. Both the transmitter and receiver feature active cooling vents for extended operation during long shooting days.
- Build Material: CNC aluminum housing for superior durability
- Power Options: L-series battery plate, D-Tap, or USB-C input (7–16V)
- Cooling System: Intelligent fan for heat management and silent operation
- Mounting: Multiple ¼”-20 threaded points for versatile rig placement
Designed for On-Set Efficiency
The Cosmo C2 streamlines communication between camera operators, focus pullers, and directors by providing uncompressed, high-quality video monitoring without tethered cables. Its ultra-stable connection and instant transmission make it perfect for use on gimbals, cranes, drones, and handheld setups, giving cinematographers the freedom to move without sacrificing performance or image integrity.
- Ideal For: Gimbals, Steadicams, drones, handheld rigs, and multi-camera setups
- Signal Quality: Uncompressed 1080p video for accurate monitoring
- Power Efficiency: Extended runtime with low power consumption design
- Plug-and-Play Setup: Simple pairing and automatic connection
The Complete Professional Wireless Solution
The Hollyland Cosmo C2 HDMI/SDI Wireless Video Transmitter System redefines professional wireless monitoring with its combination of low latency, robust transmission range, dual connectivity, and rugged design. Built for the realities of professional filmmaking and live production, it ensures flawless, real-time image delivery in even the most demanding environments.
For creators who need zero-delay wireless performance, flexible connectivity, and rock-solid reliability, the Cosmo C2 is a professional tool built to elevate your production workflow—every time you roll camera.

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