Hollyland Cosmo C2 HDMI/SDI Wireless Video Transmission System Overview
The Hollyland Cosmo C2 is a professional wireless video transmission system that supports up to 1080p60 resolution with an extended 3000 ft (LOS) range and ultra-low 33ms latency, making it ideal for studio and field productions. It operates on the 5.1–5.85 GHz frequency band and features HEVO 2.0 technology, which automatically scans and switches frequencies to avoid interference and ensure stable, uninterrupted transmission.
The system offers flexible connectivity including HDMI and SDI inputs and outputs, along with Ethernet and USB-C ports for seamless integration into broadcast and streaming workflows. It supports UVC, RTMP, and NDI|HX streaming, enabling direct live streaming and network-based video transmission with minimal setup.
With its built-in FPS Booster, the receiver can convert lower frame rates (24/25/30fps) to smooth 1080p60 output, while also supporting fractional frame rates for maximum compatibility. In case of signal interruption, the Frozen Frame feature holds the last frame on screen and allows custom logo upload for a professional appearance.
Power options include DC input, L-series battery support for the transmitter, and V-mount battery support for the receiver, ensuring reliable performance in both studio and on-location environments. The durable design includes 1/4″-20 mounting threads, a cold shoe mount, and multiple antennas for secure installation and strong signal stability.
The package includes the transmitter, receiver, five antennas, USB-C OTG adapter, cold shoe mount, power adapter, carrying case, and a 1-year manufacturer warranty — delivering a complete, professional wireless video solution.
