UGREEN HDMI Extender 70 m – CM455 (UG‑20519EU)

The UGREEN HDMI Extender 70 m (UG‑20519EU, Model CM455) is a professional-grade solution designed to transmit high-definition video and audio signals over long distances using a single Cat5e or Cat6 Ethernet cable. Supporting Full HD 1080p at 60 Hz and 3D video, the CM455 also carries multi-channel audio formats, including PCM, DTS, DSD, Dolby AC3, and 5.1/7.1 surround sound. It features bi-directional IR control for remote operation of source devices, EDID management for optimized display settings, and the ability to cascade up to three levels for extended coverage. Housed in durable aluminum alloy, this HDMI extender is ideal for conference rooms, home theaters, and surveillance setups requiring reliable long-distance transmission.

Product Features

Long-Distance HDMI Transmission

Extends HDMI signals up to 70 m (approx. 230 ft) over a single Cat5e/Cat6 Ethernet cable without signal degradation, supporting Full HD 1080p @ 60 Hz.

High-Quality Audio Support

Supports PCM, DTS, DSD, Dolby AC3, and multi-channel 5.1/7.1 audio formats, providing rich, synchronized sound for movies, gaming, and presentations.

Bi-Directional IR Control

Allows users to operate the source device from the display location, enabling convenient control of Blu-ray players, set-top boxes, and other HDMI devices.

EDID Management & Auto EQ

Automatically identifies the connected display and optimizes resolution settings while balancing audio quality for a seamless viewing experience.

Cascade Capability

Supports up to three cascading levels, potentially extending the transmission distance to 210 m for large setups.

Durable Build

Encased in an aluminum alloy shell for improved heat dissipation, reliability, and long-term operation.

Product Specifications

• Model Number: UG‑20519EU (CM455)
• Transmission Distance: Up to 70 m (230 ft) using Cat5e/Cat6; 4K @ 30 Hz supported up to 35 m
• HDMI Standard: HDMI 1.3, HDCP 1.4 (backward compatible)
• Video Resolution: Full HD 1080p @ 60 Hz; 3D video supported; 4K @ 30 Hz (limited distance)
• Audio Formats: PCM, DTS, DSD, Dolby AC3, 5.1/7.1 channel
• IR Control: Bi-directional infrared remote support
• EDID Management: Automatic detection and optimization
• Build Material: Aluminum alloy shell for heat dissipation
• Dimensions: 74 mm (L) × 26 mm (W) × 56 mm (H)
• Weight: Approx. 498 g (boxed kit)
• Power Supply: DC 5V/1A per unit (TX and RX, separate adapters required)
• Cascade Support: Up to three levels (total potential distance 210 m)
• Recommended Ethernet Cable: Solid-core Cat5e/Cat6 (568B standard); avoid CCA/stranded cables
• HDMI Cable Limit: Input/output HDMI cables ≤ 20 m using 24AWG–26AWG pure copper