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Key Digital KD-X444S
4K/18G HDBT POH Extenders

Part #: KD-X444S
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Our Price: $395.00
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Top KD-X444S Specifications
  • Technical Specifications
  • Transmitter Inputs: 1 HDMI, 1 IR, 1 RS-232
  • Transmitter Outputs: 1 HDBaseT, 1 IR, 1 RS-232
  • Receiver Inputs: 1 HDBaseT, 1 IR, 1 RS-232
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Key Digital offers the KD-X444S HDCP2.2-compliant HDBaseT transmitter and receiver kit. This team of devices support 4K/UHD digital video signal extension, ensuring equalization and amplification. Using the KD-X444S, you can extend 4K signals up to 130 feet using Cat5e/6 cable. This kit also extends 1080p signals 230 feet. These devices are controlled via IR and RS-232. The IR sensor powers using +5V on IR input ports collects line-of-sight IR from remote without external IR connecting block. 

This transmitter/receiver kit comes with a 12V/20W DC power supply, 4 mounting brackets, an IR emitter and sensor, 3-pin and 4-pin Phoenix connectors. 

Key features include the following:

  • Flexible Power over HDBaseT: Only one power connection needed
  • 10G Pass-thru: Mode enables uncompressed 10.2Gbps signal extension
  • HDR10 (High Dynamic Range): Vivid images via a wide range of luminance levels
  • HDCP 2.2: Compliancy up to HDCP 2.2 and backward compliant
  • Deep Color Support: Up to UHD/4K 30Hz 4:4:4/12 bits or 60Hz 4:4:4/8 bit
  • EDID Control: Internal library with 15 EDID handshakes including 4K with HDR in addition to native EDID data from Output/Display device connected to Rx
  • Hot Plug Detection Control: Decide on using signal voltage forced to connected input and output devices
  • Full Buffer System: Manages TMDS re-clocking/signal re-generation, HDCP authentication with source and display
  • Up/Down IR: Two channels of IR enable control to/from devices or control systems connected to Tx and Rx units
  • RS-232: Bi-Directional control to/from Tx and Rx unit on Phoenix connector
  • Lossless Compressed Digital Audio: Support for Dolby TrueHD, Dolby Digital Plus, Dolby Atmos, and DTS-HD Master Audio
  • CEC Pass-thru: For inter-device control between input and output HDMI channel


  • Receiver Outputs: 1 HDMI, 1 IR, 1 RS-232
  • Bandwidth: TMDS bandwidth 18Gbps
  • Deep Color Support: Digital video formats in Deep Color Mode up to 12 bits per color
  • DDC Communication: EDID and HDCP Bi-directional buffering from Display to Source
  • HDMI Connector: Type A, 19 Pin Female
  • RJ45 Connector: Shielded Link Connector, HDBaseT
  • IR Connector: 4-pin Phoenix
  • RS-232 Connector: 3-pin Phoenix
  • Power: (1) 12V/1.66A, 20W DC Power Supply (Screw-In Type)
  • 100-240VAC, 50-60Hz. Interchangeable transformer plug with screw-in connector
  • General Specifications
  • Regulation: CE, RoHS, WEEE, EAC
  • Enclosure: Black Metal
  • Product (Each): 4.1" x 2.8" x 0.875", Weight: 0.75 lbs
  • Warranty: Key Digital Limited 3 Year Product Warranty

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