2 in stock for Immediate Dispatch
Fast & Reliable Availability
We distribute our stock across multiple warehouses to ensure quick processing and delivery.
Need something urgently for Click & Collect?
If an item shows as in stock, please call us on 01442 292929 or email sales@proav.co.uk to confirm availability before visiting.
Fast & Reliable Availability
We distribute our stock across multiple warehouses to ensure quick processing and delivery.
Need something urgently for Click & Collect?
If an item shows as in stock, please call us on 01442 292929 or email sales@proav.co.uk to confirm availability before visiting.

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Designed by experts with profound knowledge and market insight, Cosmo C2 features a powerful 2TX & 1RX design for enhanced wireless competence and boasts an ultra-long LOS range of 3,000ft (1,000m) and a super-low latency of just 33ms.
Adopting the newly self-developed HEVO 2.0 technology, it supports seamless frequency hopping, thus ensuring a smooth and immersive experience. Combined with other powerful features and functions like NDI support, UVC and RTMP streaming, this innovative kit will prove to be a great help for multi-camera livestreaming, broadcast, and more.
2TX & 1RX Solution: Hollyland Cosmo C2 enables transmission between 2 transmitters and 1 receiver. This setup reduces the number of devices and cables needed, lessens wireless interference, and achieves better synchronization of video feeds, all of which add to a more productive workflow.
HEVO 2.0 Technology & FPS Booster: Equipped with Hollyland’s HEVO 2.0 technology, the Cosmo C2 wireless video transmission system features Seamless Frequency Hopping for enhanced signal strength and superior anti-interference performance. The RX utilizes a cutting-edge frame rate compensation algorithm to convert 24/25/30P inputs to smoother 60P outputs.
1000m Extended Range & 33ms Ultra-Low Latency: HEVO 2.0 completes each synchronous frequency hopping in 0.001s with only 33ms ultra-low latency and up to 1000m LOS range. Whether in manual or auto-switching mode, your EFP monitoring will no longer suffer from screen flickering or black screens in complex wireless environments.
NDI & UVC & RTMP Streaming: Cosmo C2's receiver supports NDI for simplified network streaming via a single cable, reducing setup complexity. It also offers UVC streaming with direct computer connection via USB-C, eliminating the need for capture cards. Additionally, Cosmo C2 enables RTMP streaming, compatible with major platforms like YouTube and Twitch for low-latency live broadcasts.
Comprehensive Ports & Versatile Power Options: Hollyland Cosmo C2 features HDMI and SDI inputs and outputs, including conversion and loopout capabilities, supporting fractional frame rates for flexibility in production. The transmitter is compatible with DC and NP-F batteries, while the receiver supports DC and V-Mount batteries, ensuring continuous operation.
| Transmitter | |
|---|---|
| Port | DC Input: 2.0mm Core Socket HDMI Input: HDMI 1.4b SDI Input: 3G SDI SDI Loopout: 3G SDI USB-C: USB 2.0 OTG Antenna: SMA Male |
| Power Supply | NP-F Battery Voltage Range: 6.8 - 8.4V DC Voltage Range: 6 - 16V |
| Power Consumption | <10W |
| Net Weight | 210g |
| Dimensions | L × W × H: 114.8 × 69 × 35.5mm (4.5 × 2.7 × 1.4") |
| Operating Frequency | 5.15 - 5.85 GHz |
| Transmit Power | < 23 dBm |
| Receiver Sensitivity | / |
| Latency | ≥33ms |
| Bandwidth | 40 MHz |
| Receiver | |
| Port | DC Input: 2.0mm Core Socket HDMI Output: HDMI 1.4b × 2 SDI Output: 3G SDI × 2 USB-C: USB 2.0 OTG Antenna: SMA Male Ethernet Port: RJ45,100 Mbps |
| Power Supply | V-Mount Battery Voltage Range: 11.8 - 16.8V DC Voltage Range: 6 - 16V |
| Power Consumption | <11W |
| Net Weight | 440g |
| Dimensions | L × W × H: 142 × 87.2 × 33.2mm (5.6 × 3.4 × 1.3") |
| Operating Frequency | 5.15 - 5.85 GHz |
| Transmit Power | < 23 dBm |
| Receiver Sensitivity | -90 dBm |
| Latency | ≥33ms |
| Bandwidth | 40 MHz |