Hollyland Cosmo C2 HDMI/SDI Wireless Video Transmission System

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.

Key Features

• Key Features
• Wireless Video Transmitter/Receiver Set
• Transmitter: HDMI/SDI In, SDI Loop Out
• Receiver: 2 HDMI/SDI Outputs
• 3000′ Line-of-Sight 1080p60 Transmission
• 5.1 to 5.85 GHz Frequency Bands
• Supports UVC, RTMP & NDI|HX Streaming
• FPS Booster Converts Frame Rates
• HEVO 2.0 Technology, 33 ms Latency
• DC Input, L-Series Battery Plate