
VS-21T Quick Start (P/N: 2900-300967QS REV 3)
VS-21T Quick Start Guide
This guide helps you install and use your VS-21T for the first time.
Go to www.kramerav.com/downloads/VS-21T to download the latest user manual and check if
firmware upgrades are available.
Step 1: Check what’s in the box
1 3-pin terminal block with wires
Step 2: Get to know your VS-21T
Lights green when IN 1 is selected.
Upon power up, IN 1 is automatically switched to the output.
Lights green when IN 2 is selected.
Lights green when the device receives power.
Connect to an Ethernet source/HDBT transmitter.
Connect to an Ethernet source/HDBT transmitter.
Connect to an Ethernet sink/HDBT receiver.
REMOTE 3-pin Terminal Block Connector
Connect to the terminal block and then connect the wires to remote,
contact-closure switches for remote control.
5V DC connector for powering the unit.
Step 3: Install VS-21T
Install VS-21T using one of the following methods:
• Attach the rubber feet and place the unit on a flat surface.
• Fasten a bracket (included) on each side of the unit and attach it to a flat surface.
For more information go to www.kramerav.com/downloads/VS-21T.
• Mount the unit in a rack using an optional RK-3T rack adapter.

Step 4: Connect the inputs and outputs
Always switch OFF the power on each device before connecting it to your VS-21T. For best results, we recommend that you always
use Kramer high-performance cables to connect AV equipment to VS-21T.
Step 5: Connect the power
Connect the 5V DC power adapter to VS-21T and plug it into the mains electricity.
Upon power up, IN 1 is automatically switched to the output.
Safety Instructions
There are no operator serviceable parts inside the unit.
Use only the Kramer Electronics power adapter that is provided with the unit.
Disconnect the power and unplug the unit from the wall before installing.
See www.KramerAV.com for updated safety information.
Step 6: Operate VS-21T
Select an input (IN 1 or IN 2) via the contact closure remote control (also known
as push-to-make momentary contact). To do so, momentarily connect the
required IN pin on the REMOTE terminal block connector to the G (Ground)
pin.
For example, to select IN 1 momentarily connect the IN 1 pin (red wire) to the G
pin (black wire). To select IN 2 momentarily connect the IN 2 pin (yellow wire)
to the G pin (black wire).
Technical Specifications
2 HDBaseT Signal / Ethernet
1 HDBaseT Signal / Ethernet
N/A. (This device does not affect the range. The range depends on the sources and the receiver.)
IN 1, IN 2 and ON LED indicators
IN 1and IN 2 remote contact closure buttons
8.91Gbps (2.97Gbps per graphic channel) pass−through
4K@60Hz (4:2:0) pass−through
0° to +40°C (32° to 104°F)
-40° to +70°C (-40° to 158°F)
10% to 90%, RHL non-condensing
Regulatory Compliance
Safety
Net Dimensions (W, D, H), each
12cm x 7.2cm x 2.4cm
(4.7" x 2.8" x 0.94")
Shipping Dimensions (W, D, H)
15.7cm x 12cm x 8.7cm
(6.2" x 4.7" x 3.4")
1 Power adapter, 1 power cord, 1 3-pin terminal block with wires
Specifications are subject to change without notice at www.kramerav.com