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GEFEN, Switchers

GTB-HD4K2K-444-BLK

Control
IP, RS-232 (default TCP)
Encoding
ASCII
IP
Telnet port 23
RS-232
19200 baud, 8N1
Line ending
CRLF
Roles
Switcher
More from this makerGTB-HD4K2K-848-BLK

Commands

9 commands
MUTE2
VIDEO MUTE ON #mask %o
Ending: crlf
VIDEO MUTE OFF #unmask %o
Ending: crlf
ROUTING7
SEND IN TO OUT r %n %o
Ending: crlf
OUT1 IN1 r 1 1
Ending: crlf
OUT1 IN2 r 2 1
Ending: crlf
OUT1 IN3 r 3 1
Ending: crlf
OUT1 IN4 r 4 1
Ending: crlf
AV SWITCH r %n %o
Ending: crlf
VIDEO SWITCH r %n %o
Ending: crlf

Cheat sheet

driver.cheatSheet()

What it is

The Gefen ToolBox 4x4 Matrix for HDMI 4K x 2K provides a compact and powerful solution for routing high-definition video and audio. This versatile 4x4 matrix switch allows up to four Ultra High Definition 4K sources to be sent to any combination of four Ultra HD displays.

Specs

Resolution: Ultra HD 4K x 2K (3840 x 2160 @ 30Hz), 1080p Full HD

Frame Rate

Signal Type: HDMI

Inputs: 4 x HDMI Type A 19-pin, female, locking

Outputs: 4 x HDMI Type A 19-pin, female, locking

Setup

First Use: Connect up to four Ultra HD sources to In 1-4 and up to four Ultra HD displays to Out 1-4.

Control: Front panel buttons, IR remote, RS-232, or IP (Telnet, UDP, web server).

Support

Tech Support Phone: (818) 772-9100, (800) 545-6900

Tech Support Email: support@gefentoolbox.com

Power Cycle: Disconnect and reconnect the AC power cord.

Factory Reset: Use the #fadefault command via RS-232 or Telnet, or the "Reset" button in the Web GUI System Configuration.

About this driver

driver.source()

Confirm each command on your device before you rely on it. Provided as is, with no warranty. To correct something or ask for it to come down, write to info@ctrlbot.io. Licensed CC BY 4.0: credit CTRLbot and link back when you share it. Product page. Manufacturer site.

Revision
1
Updated
2026-11-05
Catalog date
2026-11-12
License
CC-BY-4.0