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KEY DIGITAL, Switchers

KD-MS4x4G-2

Control
IP, RS-232 (default TCP)
Encoding
ASCII
IP
TCP port 23
RS-232
57600 baud, 8N1
Line ending
CR
Roles
Switcher
More from this makerKD-MS8x8G-2

Commands

12 commands
INPUT4
INPUT 1 SPO A SI 01
Ending: cr
INPUT 2 SPO A SI 02
Ending: cr
INPUT 3 SPO A SI 03
Ending: cr
INPUT 4 SPO A SI 04
Ending: cr
ROUTING8
SEND IN TO OUT SPO %o SI %n
Ending: cr
OUT1 IN1 SPO 01 SI 01
Ending: cr
OUT1 IN2 SPO 01 SI 02
Ending: cr
OUT1 IN3 SPO 01 SI 03
Ending: cr
OUT1 IN4 SPO 01 SI 04
Ending: cr
AV SWITCH SPO %o SI %n
Ending: cr
AUDIO SWITCH SPO %o SA %n
Ending: cr
VIDEO SWITCH SPO %o SB %n
Ending: cr

Cheat sheet

driver.cheatSheet()

What it is

The KD-MS4x4G-2 is an HDMI matrix switcher with support of 4K resolution HDCP 2.2, and signal bandwidth of up to 18Gbps for routing up to 4 HDMI sources to 4 HDMI displays at any time and in any combination. It is ideal for routing and distributing HDMI signals in residential or commercial installations requiring reliable, high-quality AV distribution.

Specs

Resolution: Up to 4096x2160p (UHD/4K) at 24/25/30/60hz 4:4:4

Frame Rate: 24/25/30/60hz

Signal Type: HDMI

Inputs: 4 HDMI Type A, 19 Pin Female

Outputs: 4 HDMI Type A, 19 Pin Female, 4 Balanced/unbalanced line level audio on 6-pin terminal block, 4 TOSlink optical digital audio

Setup

First Use: Connect HDMI sources to inputs, HDMI displays to outputs, analog audio to amplifiers, digital audio to soundbars/receivers, control system to TCP/IP or RS-232, and power supply. Connect PC to USB micro port for firmware updates.

Video Optimization: EDID: 15 internal configurations per input plus native output EDID. UHD/4K EDID includes HDR headers.

CEC: Not supported.

Control: KD-App, KDMS Pro, Web UI, IR, TCP/IP, RS-232.

Support

Tech Support Phone: +1 914-667-9700 Opt 2

Tech Support Email: sales@keydigital.com

Factory Reset: Press and hold Output 1 + Output 4 buttons simultaneously for 10 seconds to reset the unit to factory default.

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