Hollyland Cosmo C1 SDI/HDMI Wireless Video Transmission System

Key Features
  • Wireless Video Transmitter/Receiver Set
  • Transmitter HDMI/SDI Input, SDI Loop Out
  • Receiver HDMI & 2 x SDI Outputs
  • OLED Screen, USB Type-C Power Input
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RRP:  $1,495.00 
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The Hollyland Cosmo C1 SDI and HDMI Wireless Video Transmission System from  allows you to transmit up to 1080p60 video via HDMI/SDI inputs up to 1000 feet line-of-sight with a low 40 ms latency to an HDMI or dual SDI outputs. The transmitter offers one HDMI input, one SDI input, and one SDI loop-through output, and the receiver offers two SDI outputs and one HDMI output.


The system operates on the 5 GHz frequency band and is encrypted to prevent video leakage. The system supports smart channel selection, allowing the system to choose the cleanest channel for transmission. It also supports UVC pull streaming. Both units also feature a bright, easy-to-read OLED display. Each unit is designed to be powered via an L-series battery plate, by the included D adapter, or with an optional USB power supply via the USB Type-C port. Four standard antennas and two mushroom antennas are supplied for the receiver and transmitter.


Key Features

Transmit up to a 1080p60 HDMI/SDI signal to an HDMI or dual SDI outputs

1000 feet line-of-sight, uncompressed transmission with a low 40 ms latency

AES-128 encryption to prevent video leakage

Smart channel selection

Supports UVC pull streaming

SDI loop-through output on transmitter

5 GHz frequency band

OLED screen

USB Type-C power input option

L-series battery plates on back of each unit

Power with included DC adapter or with optional USB adapter


Antenna PortsTransmitter/Receiver: 2 x RP-SMA Female
VideoTransmitter: 1 x BNC (3G-SDI) Input
Transmitter: 1 x HDMI Type A Input
Transmitter: 1 x BNC (3G-SDI) Loop Output
Receiver: 2 x BNC (3G-SDI) Output
Receiver: 1 x HDMI Type A Output
Embedded AudioHDMI/SDI: 2-Channel
PowerTransmitter/Receiver: 1 x Coax (16 VDC) Input
Other I/OTransmitter/Receiver: 1 x USB 3.1 / USB 3.2 Gen 1 (USB Type-C) Input
Encryption128-Bit AES
Wireless Range1000' / 304.8 m
Channel Bandwidth40 MHz
Frequency RangeUS: 5.1 to 5.9 GHz
Latency40 ms
Format Support
Video FormatHDMI/SDI
1080p: 60
Wireless Video CompressionUncompressed
DC Input Power6 to 16 VDC
Battery TypeTransmitter/Receiver: 1 x L-Series
Mounting1 x Cold Shoe

What's In The Box

  • Hollyland Cosmo C1 SDI/HDMI Wireless Video Transmission System
  • Cosmo C1 Transmitter
  • Cosmo C1 Receiver
  • 4 x Antenna
  • 2 x Mushroom Antenna
  • Shoe Mount
  • Pan/Tilt Mount with Shoe Mount
  • USB Type-C Adapter
  • DC Adapter
  • Expansion Accessory
  • Limited 1-Year Warranty

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