Rev 0 – Apr 2016
KD-4x4CSA
KD-8x8CSA
4/8 Inputs to 4/8 Outputs HDMI Matrix Switchers
with Audio De-embedding of Analog L/R
Balanced/Unbalanced & Digital Coaxial Audio,
supports Ultra HD/4K & HDCP 2.2
Operating Instructions
Key Digital®, led by digital video pioneer Mike Tsinberg,
develops and manufactures high quality, cutting-edge
technology solutions for virtually all applications where
high-end video and control are important. Key Digital®
KD-4x4CSA
is at the forefront of the video industry for Home Theater
Retailers, Custom Installers, System Integrators,
Broadcasters, Manufacturers, and Consumers.
KD-8x8CSA
Key Digital® Systems :: 521 East 3rd Street :: Mount Vernon, NY 10553
Phone : 914.667.9700
Fax : 914.668.8666
Web : www.keydigital.com
The Experts in Digital Video Technology and Solutions™
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Table of Contents
About KD-4x4CSA/KD-8x8CSA
About KD-4x4CSA/KD-8x8CSA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Key Digital’s KD-4x4CSA/KD-8x8CSA switchers are designed and engineered to offer the best in
Application Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
quality, performance, and reliability, while providing a cost-effective HDMI switching solution. The
Quick Setup Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
KD-4x4CSA/KD-8x8CSA HDMI matrix switchers are capable of switching 4/8 independent Inputs/
Sources to 4/8 independent Outputs/Zones and feature de-embedding of HDMI audio for external
distribution. KD-4x4CSA/KD-8x8CSA support all SD, HD, VESA and Ultra HD/4K video standards,
Connections, Buttons and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
including UHD/4K, 1080p/60, 1920x1200, 3D, and HDCP 2.2.
Settings and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Key Features
Communication Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
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Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Important Product Warnings & Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
How to Contact Key Digital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
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HDMI Matrix Switching: 4/8 HDMI sources to 4/8 HDMI outputs
HDCP Licensing: Fully licensed and compatible with HDCP 2.2
Resolution Support: Supports all SD, HD, and VESA (VGA, SVGA, XGA, WXGA, SXGA, UXGA).
Ultra HD/4K Support: 4096x2160 or 3840x2160 30Hz at 4:4:4 and 60Hz at 4:2:0
HDR (High Dynamic Range): More life-like images through a greater range of luminance levels
Deep Color Support: Up to UHD/4K 30Hz 4:2:2/12 bits or 60Hz 4:2:0/8 bit
Audio De-Embedder: Audio from the selected HDMI input is de-embedded through the Coax
digital (PCM) or Analog L/R Balanced/Unbalanced
3D Ready: Capability to pass 3D stereoscopic signal formats
Full Buffer System™: Manages TMDS re-clocking / signal re-generation, HDCP authentication
to source & display, and EDID Control handshake
EDID: Internal library with 15 default EDID configurations for input, in addition to native EDID data
for any Output/Display
TMDS re-clocking: Support for long HDMI connectivity using Key Digital® HDMI cables
Lossless Compressed Digital Audio: Dolby® TrueHD, Dolby® Digital Plus, DTS-HD Master
Audio™, and Dolby Atmos
Control: Front panel buttons/LEDs, Serial IR, Optical IR, RS-232 Control, and TCP/IP Control
Control System Support: Key Digital app ready. Compass Control ready. Fully controllable by
all IR, RS-232, and TCP/IP supported control systems via open API.
Accessories
›› Power Supply:
»» KD-4x4CSA - KD-PS12V2A 12V/2A DC Power Jack, Screw In Type
»» KD-8x8CSA - KD-PS12V5A 12V/5A DC Power Jack, Screw-In Type
›› Rack Ears
›› Remote Control
›› 5/9 6-Pin Terminal Blocks
Rack Mounting:
›› Secure the rack ears to each side of the KD-4x4CSA/KD-8x8CSA with the supplied hardware and
then fasten the unit to the rack rails with the included machine screws.
Always follow the instructions provided in this Operating Manual.
Please check the Key Digital Website for the most up-to-date Manual.
© 2016 Key Digital, Inc. All rights reserved.
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Quick Setup Guide
Application Example
›› Step 1: Find a safe and convenient location to mount or place KD-4x4CSA/KD-8x8CSA unit
›› Step 2: Begin with the KD-4x4CSA/KD-8x8CSA unit and all input/output devices turned off with
HDMI
RJ45
Ultra HD/4K
Digital Signage
power cables removed
WiFi
›› Step 3: Connect your HDMI sources to the input ports of KD-4x4CSA/KD-8x8CSA unit
WiFi Router
›› Step 4: Connect your HDMI displays to the output ports of KD-4x4CSA/KD-8x8CSA unit
KD-MC1000
HDMI
›› Step 5: Before connecting power supply to power outlet, screw-in the power supply to the
RJ45
Visualizer
x2
IR/RS232
KD-4x4CSA/KD-8x8CSA unit
KD-ProCL1
›› Step 6: After all connections are made, plug-in power supply to power outlet
Master Controller
HDMI
›› Step 7: Power on input/output devices
›› Step 8: Operate the KD-4x4CSA/KD-8x8CSA switcher via front panel buttons, Serial IR, Optical
KD-8x8CSA
HDMI
IR, RS-232, and TCP/IP Control.
Installation and Operation
HDMI
RS-232
Satellite x3
HDMI
Red-Ray
HDMI
HDMI
HDMI
Before permanently securing the unit for final installation, test for proper operation of the unit and
cables in your system. It is recommended that you leave enough ventilation space to provide
sufficient airflow and cooling.
Push Button Control
IR
HDMI
KD-X411ProK
Multi-Zone Amp
Laptop
Audio
x5
RS-232
HDMI
CAT5e/6
Laptop
KD-X411ProK
x3
IR
HDMI
Reception Area
Projector
Huddle Room
The KD-4x4CSA/KD-8x8CSA may also be operated using the
IR Remote provided with the unit (The remote is powered by a
CR2025 Battery). The KD-4x4CSA/KD-8x8CSA switcher features
an IR sensor on the front of the unit for reception of signals.
IR Emitter Control
x4
IR
HDMI
Displays
KD-4x4_8x8CSA_Manual.indd 2-3
IR Remote Control
KD-X411ProK
x4
The KD-4x4CSA/KD-8x8CSA unit may be controlled via the push
buttons on the front of the unit. Choose which output to change
and then select the desired input by pressing the corresponding
“Input Select” button. The front LED indicators (1, 2, 3, 4/5, 6, 7, 8)
correspond to the input that has been selected for each output.
Displays
The IR Sensor on the front panel may also accept signals from a
Compass Control Master Controller or from a 3rd party control
system. When using a Master Controller or 3rd party control
system, the IR Emitter must be mounted over the IR Sensor on
the front of the KD-4x4CSA/KD-8x8CSA unit. The other end of
the cable is connected to the Multi-function I/O port on the Master
Controller or the IR Extender/IR Connecting Block of the 3rd party
control system.
Boardroom
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Serial IR, RS-232, and TCP/IP Control
Audio Outputs
The KD-4x4CSA/KD-8x8CSA features a 6-Pin Terminal Block for IR and RS-232 Control. Signals
may be received from these connections as well as the Ethernet Jack for TCP/IP Control. Serial
commands may be found in the “Communications Protocol” section.
For Serial IR, connect a mono cable to the Multi-function I/O port on the Master Controller or
the IR Extender/IR Connecting Block of the 3rd party control system. The other end would then
connect to Pins 1 and 2 on the 6-Pin Terminal Block. IR In is Pin 1; Ground is Pin 2.
For Serial RS-232, connect a stereo cable to the Multi-function I/O port on the Compass Control
Master Controller or the RS-232 port of the 3rd party control system. The other end would then
connect to Pins 3,4,5,6 on the 6-Pin Terminal Block. Tx Data is Pin 3; Rx Data is Pin 5; Ground is
Pin 4 and/or Pin 6. Either ground pin may be used for RS-232.
For TCP/IP control, connect an Ethernet cable from the KD-4x4CSA/KD-8x8CSA to a network
router or connect a crossover cable from the KD-4x4CSA/KD-8x8CSA directly to a PC.
›› Each Output Channel has 1 Analog L/R Balanced/Unbalanced connection: 6-Pin Terminal Block
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Connections, Buttons and LEDs
Rear Panel Connections:
All connections to the KD-4x4CSA/KD-8x8CSA are found on the rear panel of the units.
Refer to the illustrations below for port assignments while making connections.
Serial IR
TCP/IP & RS-232
Audio Outputs - PCM and 6-Pin Terminal Block
which provides de-embedded 2ch Balanced Analog Audio Output from selected HDMI input
source
The Pin assignment for the audio is as follows:
»» Left + is Pin 1; Left - is Pin 3; Left Ground is Pin 2.
»» Right + is Pin 4; Right - is Pin 6; Right Ground is Pin 5.
Each Output Channel has 1 Digital Audio Output: RCA Jack which provides de-embedded
Digital Audio Output from selected HDMI input
There are no volume or tone control features, only muting control of the external audio outputs
via RS232 and TCP/IP
There are no DSP features. Audio must be configured in the source. For example, in order to
achieve 2ch analog audio output, the selected HDMI input source audio format must be 2ch.
Audio Input
Signal Format
Audio L/R
Output
Digital Audio Output
(Coax and Optical)
2ch PCM
Pass-Through
Pass-Though
Multi-Channel PCM
MUTE
MUTE
Dolby DTS
MUTE
Pass-Though
HD Audio
MUTE
MUTE
Front Panel Operation
Output Select Buttons
HDMI Inputs & LEDs
HDMI Outputs & LEDs
IR Eye
Power
›› HDMI Inputs:
»» The HDMI Inputs are located on the bottom left side of the back panel. The Inputs have a
blue LED that will illuminate solid during active link (voltage + data link)
›› HDMI Outputs:
»» The HDMI Outputs are located on the bottom right side of the back panel. The Outputs
have a blue LED that will illuminate solid during active link (voltage + data link)
›› Ethernet Jack, Serial IR, RS-232, and Power Block:
»» Located on the right side of the back panel.
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Input LEDs
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There are 4/8 Output buttons along the front panel.
Pressing an output button will select the next HDMI input.
A blue LED will indicate which Input has been selected for each Output.
Front button control can be disabled/enabled via serial control if desired.
The Optical IR window is located on the right side of the front panel receives IR remote control
signals.
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›› Notes:
»» Front LEDs will scroll during boot up
»» Video OFF setting for an output is represented by a steady blinking of the selected input
indicator LED for the respective output
Settings and Adjustments
The KD-4x4CSA/KD-8x8CSA unit may be configured using the provided IR Remote. Such settings
and adjustments include unit address, matrix switching, and EDID settings. Factory Reset may be
completed by using the push buttons.
Addressing Mode
Units may be addressed when used in a multi-unit system. The Key Digital IR Remote is required
to change the address of the KD-4x4CSA/KD-8x8CSA unit. Please press the following sequence
on the Key Digital IR Remote to change the address.
R3 » R1 » R2 » X » X
»» X = Numeric Keypad Button from the IR Remote (Device Select)
»» Default address is 00 – Single unit mode.
»» All addresses must be two digits long
»» All LED lights will blink once to confirm the address has been set.
»» Once a unit has been addressed, the two digit address must precede all IR command
sequences
»» X = Numeric Keypad Button from the IR Remote (Device Select)
»» A = Numeric Input Button 1 through 8 from the IR Remote (Input)
»» All LED lights will blink once to confirm the EDID mode has been set.
The EDID may also be copied from a specified Output to a specific Input. Please press the
following sequence on the Key Digital IR Remote to change the EDID settings:
R2 » R1 » R3 » A » B
»» A = Numeric Input Button 1 through 8 from the IR Remote (Input)
»» B = Numeric Output Button 1 through 8 from the IR Remote (Output)
»» All LED lights will blink once to confirm the EDID mode has been set.
The possible EDID settings can range from ‘00’ to ‘15’. (‘04’ is the default).
00
Copy EDID from HDMI Output
08
4Kx2K@30, Dolby/DTS 5.1 Audio
01
1080i@60, 2Ch PCM Audio
09
4Kx2K@30, HD Audio
02
1080i@60, Dolby/DTS 5.1 Audio
10
4Kx2K@60, 2Ch PCM Audio
03
1080i@60, HD Audio
11
4Kx2K@60, Dolby/DTS 5.1 Audio
04
1080p@60, 2Ch Audio (Default)
12
4Kx2K@60, HD PCM Audio
05
1080p@60, Dolby/DTS 5.1 Audio
13
1280x720p@60 DVI
06
1080p@60, HD PCM Audio
14
1920x1080p@60 DVI
07
4Kx2K@30, 2Ch Audio
15
3840x2160p@60 DVI
Matrix Switching
Resetting to Factory Default
The Key Digital IR Remote is required to change the selected input to an output of the KD4x4CSA/KD-8x8CSA unit. Please press the following sequence on the Key Digital IR Remote to
switch the input of an output.
To reset your KD-4x4CSA unit to factory default, please follow these steps:
»» Press and hold the Output 1 button and the Output 4 button on the front panel for 10
seconds.
B»A
»» B = Numeric Output Button 1 through 8 from the IR Remote (Output)
»» A = Numeric Input Button 1 through 8 from the IR Remote (Input)
EDID Control
EDID (Extended Display Identification Data) is a data structure provided by a digital display to
describe its capabilities to a video source. This data is also known as a “handshake” and typically
includes manufacturer, serial number, product type, resolutions supported by the display, display
size, pixel mapping data, etc.
Key Digital EDID Control allows the integrator to choose the handshake that will be provided to
source devices of the system. The EDID handshake is relayed to the source from the Champion
Series switch, or from the first connected display (default setting). This handshake will always be
the EDID information that the source device receives.
To reset your KD-8x8CSA unit to factory default, please follow these steps:
»» Press and hold the Output 1 button and the Output 8 button on the front panel for 10
seconds.
Notes:
»» All LED lights will blink once to confirm that the unit has been reset.
»» Switch is defaulted back to Input 1 to Output 1, Input 2 to Output 2… Input 8 to Output 8
»» All HDMI Outputs are on
»» Address Mode will reset to 00
»» Each input EDID will be set to EDID preset 04.
»» All Analog and Digital Audio outputs are enabled
The Key Digital IR Remote is required to change the EDID of a specific input. Please press the
following sequence on the Key Digital IR Remote to change the source EDID settings:
R2 » R1 » R3 » A » X » X
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Communication Protocol
The KD-4x4CSA/KD-8x8CSA allows control over serial interface for bi-directional communication.
In addition to RS-232, the serial interface may also be accessed using a TCP/IP connection
(Default IP address is 192.168.0.239 with default port 23).
›› Connection Protocol:
»» Baud Rate = 57600 bits per second
»» Data Bits = 8
»» Stop Bits = 1
»» Parity = None
»» Flow Control = None
»» Carriage Return: Required
»» Line Feed: Required
›› Notes:
»» Commands are not case-sensitive.
»» Spaces are shown for clarity; commands should NOT have any spaces.
»» Carriage return and line feed is required at the end of each string.
»» If a new command is received, a prompt should be sent back.
Help Command (H). Returns entire API in readable format
KD-4x4CSA> H
-------------------------------------------------------------------------Key Digital Systems HELP
--------------------------------------------------------------------------- KD-4x4CSA
System Address = 00
F/W Version : 1.02 ----- Azz
: All Commands may have Prefix System Address zz=[01-99] --- H
: Help
--- PF
: Power Off
--- PN
: Power ON
--- STA
: Show Global System Status
----- Video Output Setup Commands:
--( xx = [01-04,A], yy = [01-04,U/D], A=All, U=Up, D=Down )
--- SPO xx SI yy : Set Output xx to Video Input yy
--- SPO xx ON/OFF : Set Output xx ON/OFF
--- SPO xx DBG ON/OFF : Set Output xx Debug Mode ON/OFF
--- SPO xx HFM A/D/H : Set Output xx to Video Format by
--Auto(A)/Forced DVI(D)/Bypass(H)
----- EDID Setup, xx = [01-04,A], yy = [01-04], zz = [01-15] (A=All)
--- SPC EDID xx H yy : Copy EDID from Ouput yy to Input xx
--- SPC EDID xx D zz : Copy EDID from Default EDID zz to Input xx
--DEFAULT EDID 01 : HDMI Video 1080i@60, Audio 2CH PCM Audio
--DEFAULT EDID 02 : HDMI Video 1080i@60, Audio PCM,DTS/DOLBY
--DEFAULT EDID 03 : HDMI Video 1080i@60, Audio PCM,DTS/DOLBY/HD
--DEFAULT EDID 04 : HDMI Video 1080p@60, Audio 2CH PCM Audio
--DEFAULT EDID 05 : HDMI Video 1080p@60, Audio PCM,DTS/DOLBY
--DEFAULT EDID 06 : HDMI Video 1080p@60, Audio PCM,DTS/DOLBY/HD
--DEFAULT EDID 07 : HDMI Video 4Kx2K@30/3D, Audio 2CH PCM Audio
--DEFAULT EDID 08 : HDMI Video 4Kx2K@30/3D, Audio PCM,DTS/DOLBY
--DEFAULT EDID 09 : HDMI Video 4Kx2K@30/3D, Audio PCM,DTS/DOLBY/HD --DEFAULT EDID 10 : HDMI Video 4Kx2K@60/3D, Audio 2CH PCM Audio
--DEFAULT EDID 11 : HDMI Video 4Kx2K@60/3D, Audio PCM,DTS/DOLBY
--DEFAULT EDID 12 : HDMI Video 4Kx2K@60/3D, Audio PCM,DTS/DOLBY/HD --DEFAULT EDID 13 : DVI Video Max. 1280x720@60, No Audio
--DEFAULT EDID 14 : DVI Video Max. 1920x1080@60, No Audio
--DEFAULT EDID 15 : DVI Video Max. 3840x2160@60, No Audio
--
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---- Audio Output Setup Commands: xx = [01-04,A], [E=Enable, D=Disable] --- SPO xx AA E/D : Enable/Disable External Analog Audio Output
--- SPO xx DA E/D : Enable/Disable External Digital Audio Output
----- Network Setup Command ( xxx=[000-255], zzzz=[0001~9999] )
--- SPCETIPA xxx.xxx.xxx.xxx : Set Host IP Address to xxx.xxx.xxx.xxx
--- SPCETIPM xxx.xxx.xxx.xxx : Set Net Mask to xxx.xxx.xxx.xxx
--- SPCETIPR xxx.xxx.xxx.xxx : Set Route IP Address to xxx.xxx.xxx.xxx --- SPCETIPP zzzz
: Set TCP/IP Port to zzzz
--- SPCETIPB
: Set Network Reboot and Apply New Config ----- System Address Setup Command: xx = [00-99], 00 = Single
--- SPC Axx
: Set System Address to xx
----- System Control Setup Commands:
--- SPC RSB z : Set RS232 Baud Rate to z bps, z=[0-4]
--[0:57600, 1:38400, 2:19200, 3:9600, 4:4800]
--- SPC FB E/D : Enable/Disable Front Panel Buttons
--- SPCDF 00
: Reset to Factory Default without Network Change
--- SPCDF
: Reset to Factory Default All
--------------------------------------------------------------------------
Status command (STA). Returns current state and settings of the unit:
KD-4x4CSA> STA
-------------------------------------------------------------------------Key Digital Systems STATUS
--------------------------------------------------------------------------- KD-4x4CSA
System Address = 00
F/W Version : 1.02 ----- Power : ON
--- RS232 : Baud Rate=57600bps, Data=8bit, Parity=None, Stop=1bit
--- Front Panel Button : Enabled
----- Network Setting(Telnet Server) Status
--- MAC Address = 18:98:66:E9:7C:B1
--- Host IP Address = 192.168.000.239
--- Net Mask = 255.255.255.000
--- Router IP Address = 192.168.000.001
--- TCP Port = 0023
----- Video Input 01 : EDID = DEFAULT 04, LINK = OFF
--- Video Input 02 : EDID = DEFAULT 04, LINK = OFF
--- Video Input 03 : EDID = DEFAULT 04, LINK = OFF
--- Video Input 04 : EDID = DEFAULT 04, LINK = OFF
----- Video Output 01 : IN = 01, OUT = ON , LINK = OFF, DBG = OFF, AUTO
--- Video Output 02 : IN = 02, OUT = ON , LINK = OFF, DBG = OFF, AUTO
--- Video Output 03 : IN = 03, OUT = ON , LINK = OFF, DBG = OFF, AUTO
--- Video Output 04 : IN = 04, OUT = ON , LINK = OFF, DBG = OFF, AUTO
----- Audio Output 01 : Analog = Enabled, Digital = Enabled
--- Audio Output 02 : Analog = Enabled, Digital = Enabled
--- Audio Output 03 : Analog = Enabled, Digital = Enabled
--- Audio Output 04 : Analog = Enabled, Digital = Enabled
--------------------------------------------------------------------------
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Specifications
Technical:
›› Input (Each): 1 HDMI Connector, Type A, 19 Pin Female
›› Output (Each): 1 HDMI Connector, Type A, 19 Pin Female; 6-Pin Terminal Block for Analog L/R
››
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Output; RCA Jack for Digital Audio Output [follows SPDIF format (IEC 60958 )]
Bandwidth: TMDS bandwidth 10.2 Gb/s
Link: Single Link
DDC Signal (Data): Input DDC Signal - 5 Volts p-p (TTL)
HDMI Video/Audio Signal: Input Video Signal - 1.2 Volts p-p
DDC Communication: EDID and HDCP buffering between source and display
Wired IR: modulated IR signal input, 0-5V TTL or -10to +10V, 3.5mm mono female connector with
signal on tip
Power: External Power Supply – (KD-4x4CSA) 12V/2A, (KD-8x8CSA) 12V/5A
General:
Regulation: CE, RoHS, WEEE
Rack Mount: 1U, Full Rack Width (rack ears included)
Enclosure: Black Metal
Product Dimensions: 17.25” x 7.5” x 1.75”
Shipping Dimensions: 21.25” x 13” x 3.5”
Product Weight: 6.5 lb.
›› Shipping Weight: 8 lb.
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Important Product Warnings:
1. Connect all cables before providing power to the unit.
2. Test for proper operation before securing unit behind walls or in hard to access spaces.
3. If installing the unit into wall or mounting bracket into sheet-rock, provide proper screw support
with bolts or sheet-rock anchors.
Safety Instructions:
Please be sure to follow these instructions for safe operation of your unit.
1. Read and follow all instructions.
2. Heed all warnings.
3. Do not use this device near water.
4. Clean only with dry cloth.
5. Install in accordance with the manufacturer’s instructions.
6. Do not install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat.
7. Only use attachments/accessories specified by the manufacturer.
8. Refer all servicing to qualified service personnel. Servicing is required when the device has
been damaged in any way including:
»» Damage to the power supply or power plug
»» Exposure to rain or moisture
Power Supply Use:
You MUST use the Power Supply provided with your unit or you VOID the
Key Digital® Warranty and risk damage to your unit and associated equipment.
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How to Contact Key Digital®
System Design Group (SDG)
For system design questions please contact us at:
›› Phone:914-667-9700
›› E-mail:sdg@keydigital.com
Customer Support
For customer support questions please contact us at:
›› Phone:914-667-9700
›› E-mail:customersupport@keydigital.com
Technical Support
For technical questions about using Key Digital® products, please contact us at:
›› Phone:914-667-9700
›› E-mail: tech@keydigital.com
Repairs and Warranty Service
Should your product require warranty service or repair, please obtain a
Key Digital® Return Material Authorization (RMA) number by contacting us at:
›› Phone:914-667-9700
›› E-mail:rma@keydigital.com
Feedback
Please email any comments/questions about the manual to:
›› E-mail:customersupport@keydigital.com
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