Hollyland Cosmo C2 Wireless Video Transmitter

Two cameras, one receiver

The Cosmo C2 receiver handles the signal from two transmitters at once. A 2TX + 1RX setup saves devices and cables, reduces interference and keeps both feeds in sync.

1,000 m range and 33 ms latency

Cosmo C2 carries video up to 1,000 m line of sight, and its 33 ms latency stays the same over long distances. It suits sports coverage, concerts, weddings, church services and ENG.

2TX + 1RX setup

The Cosmo C2 receiver can take video from two transmitters at the same time. This transmitter turns a 1TX + 1RX kit into a two-camera setup with one receiver.

HEVO 2.0 and seamless frequency hopping

Hollyland’s own HEVO 2.0 technology constantly monitors nearby interference and switches to a clean channel in the 5.15–5.85 GHz band without dropouts. Compared with HEVO 1.0 it offers up to 18% lower latency and up to 186% greater range.

Video for the network and streaming

The Cosmo C2 receiver sends the transmitter’s video to the network via NDI HX3, to a computer via UVC and to streaming platforms via RTMP, so a camera with this transmitter slots easily into a live production.

Connectors for professional rigs

The transmitter has HDMI 1.4b and 3G-SDI inputs, a 3G-SDI loop-out for the on-camera monitor and a USB-C port. Fractional frame rates are supported.

Power and frozen frame

The transmitter runs on a locking 6–16 V DC input or an NP-F battery. If the link drops, the receiver holds the last frame, and you can replace that image with your own logo from a USB flash drive.