UGREEN CM455 HDMI Over Ethernet Extender 1080P 70m EU

Long-Reach HDMI Signal Distribution over Twisted Pair

The UGREEN CM455 is a transmitter and receiver pair that carries an HDMI signal over a single Cat5e or Cat6 cable. It supports 1080p at 60Hz up to 70 metres and 4K at 30Hz up to 40 metres. The kit suits meeting rooms, lecture theatres, and digital signage installations where source and display sit far apart. Each unit provides one HDMI female input or output and one RJ45 port. The link uses HDBaseT-style signal processing with HDCP 1.4, 3D frame packing, and EDID read-write management. EDID handling negotiates the best common resolution between source and display without manual configuration. An EQ adjustment stage compensates for cable attenuation and keeps audio and video stable over long runs. Audio passes at sample rates up to 192kHz at 24-bit, covering PCM, DTS, DSD, and Dolby AC3 formats. The transmitter accepts an HDMI cable up to 20 metres long on the source side when using 26AWG pure copper. The receiver drives a display over a similar cable length. A DC 5V 1A power adapter feeds each unit. The chassis measures approximately 74 x 26 x 56 mm. Three-level cascade support lets technicians chain three LAN cables for extended reach in large venues. The pair operates without drivers, so deployment requires no host software. Metal-alloy shells and oxidation-resistant contacts support continuous 24/7 duty in security and surveillance racks. The extender works with laptops, desktops, Blu-ray players, consoles, set-top boxes, monitors, and projectors. Installers can replace a long HDMI run with structured cabling, which lowers material cost and simplifies wall and ceiling routing. The unit carries no IP stack, so it does not introduce a network addressable device onto the LAN. Signal conversion happens in hardware, and the link stays independent of network switches and DHCP services. Each unit includes LED indicators for power and link status. The compact footprint fits behind a display or inside a shallow back box. The kit provides a deterministic point-to-point HDMI extension for professional AV and IT integration projects.

Key Features

• Single-Cable HDMI ExtensionThis 1080P HDMI extender carries video and audio over one Cat5e or Cat6 run up to 70 metres.

• EDID and EQ Management

  • EDID read-write negotiates the best common resolution
  • EQ adjustment compensates for cable attenuation
  • HDCP 1.4 and 3D frame packing support

• Three-Level Cascade SupportTechnicians can chain three LAN cables for extended reach in large venues.

Specifications

What’s in the Box

• Transmitter unit

• Receiver unit

• Power adapters

• User documentation

Why Choose This Extender Pair

• Replaces long HDMI runs with structured cabling for simpler routing.

• Delivers stable 1080p video and multi-channel audio over 70 metres.

• Operates as a point-to-point link without an IP stack or switch dependency.

• Supports cascade chaining for extended reach in large rooms.

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