Hollyland Cosmo C1 SDI/HDMI Wireless Video Transmission System

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Brand: Hollyland


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Hollyland Cosmo C1 SDI/HDMI Wireless Video Transmission System

The Cosmo C1 SDI/HDMI Wireless Video Transmission System from Hollyland allows you to transmit up to 1080p60 video via HDMI/SDI inputs up to 1000' 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' 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


  • 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
  • 1000' Line-of-Sight 1080p60 Transmission
  • 5.1 to 5.9 GHz Frequency Range
  • AES-128 Encryption, 40 ms Latency
  • L-Series Battery Plates on TX/RX
  • DC Adapter Power or Optional Battery


I/O Antenna Ports:
Transmitter/Receiver: 2 x RP-SMA Female
I/O Video:
  • Transmitter: 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
  • I/O Embedded Audio:
    HDMI/SDI: 2-Channel
    I/O Audio:
    I/O Power:
    Transmitter/Receiver: 1 x Coax (16 VDC) Input
    I/O Other I/O:
    Transmitter/Receiver: 1 x USB 3.1 / USB 3.2 Gen 1 (USB Type-C)| Input
    I/O Encryption:
    128-Bit AES
    Wireless Wireless Range:
    1000' / 304.8 m
    Wireless Channel Bandwidth:
    40 MHz
    Wireless Frequency Range:
    US: 5.1 to 5.9 GHz
    Wireless Latency:
    40 ms
    Format Support
    Format Support Video Format:
    HDMI/SDI | 1080p: 60
    Format Support Wireless Video Compression:
    Power DC Input Power:
    6 to 16 VDC
    Power Battery Type:
    Transmitter/Receiver: 1 x L-Series
    1 x Cold Shoe

    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
  • Customer Reviews