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StarTech Mult-Input HDBaseT Extender Kit with Switch and Video Scaler
SKU# AC23896, Model# ST121HDBTSC

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SKU # AC23896 | Model # ST121HDBTSC

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Connect four video sources to a remote HDMI display over CAT5/CAT6 cabling and easily scale and switch between HDMI DP or VGA video sources - Save hassle and expense with a multi input HDBaseT extender kit - Built-in video scaler - Supports 4K at up to 130 ft. / 1080p at up to 230 ft. - DisplayPort extender / HDBaseT HDMI extender / HDBaseT transmitter receiver kit / HDMI and VGA over CAT6 / Multi input video switcher / VGA extender / Video extender / Video over CAT6 / Video over Ethernet

Manufacturer Warranty: 2 Years Limited Warranty
Manufacturer Contact Info:,

This multi-input HDBaseT™ extender kit extends your A/V signals to a remote location up to 230 ft. (70 m) away. It features a built-in switch and scaler, so you can choose which video source is output from four independent video sources (2 x HDMI, 1 x VGA and 1 x DisplayPort).

Seamless Integration and Operation

The HDBaseT extender’s built-in converter switch lets you connect two HDMI sources, a VGA source, and a DP source to the same remote and local HDMI display. You don’t need adapters or scalers, or a video switch.

Along with manually switching your video source with easy-to-use buttons, the video extender ensures hassle-free operation with two auto-switching modes: auto-detect switching, which detects and selects a newly connected device, and priority selection, which lets you choose which port is activated by default, for automatic switching.

Built-In Video Scaling

This HDBaseT extender features a built-in scaler that scales the image to 1080p, so you can rest assured your HDMI display will intuitively work with any source that’s connected through it. Scaling is easy to do, with an intuitive OSD that's accessible using buttons on the remote receiver. Newer HDMI displays no longer support legacy resolution video signals. Without support for these common VGA resolutions, your source may not work with your new HDMI display.

High-Definition 1080p Video at 230 Feet (70 Meters)

The extender kit maintains your HD picture quality, even at 230 ft. (70 m) away from your video source, ensuring you can provide the best possible viewing experience.

The ST121HDBTSC is backed by a 2-year warranty and free lifetime technical support.

Operating Temperature0° to 40°C (32°F to 104°F)
Storage Temperature-10° to 60°C (14°F to 140°F)
CablingCat 5e UTP or better
LED Indicatorsinput LEDs (receiver)
selected port LEDs (receiver)
selected port LEDs (transmitter)
status LED (receiver)
status LEDs (transmitter)
Packaging Information
Package Height40 mm [1.6 in]
Package Length160 mm [6.3 in]
Package Quantity1
Package Width98 mm [3.9 in]
Shipping (Package) Weight1102 g [38.9 oz]
Audio Specifications2-channel
Max Distance70 m / 230 ft
Maximum Cable Length70 m [229.6 ft]
Maximum Digital Resolutions1920x1200 @ 60 Hz
Supported Resolutions1920x1200 @ 60 Hz, 1920x1080 (1080p), 1680x1050, 1600x1200, 1440x900, 1400x1050, 1366x768, 1280x800, 1360x768, 1280x1024, 1280x720 (720p), 1024x768, 800x600, 640x480

Lower resolutions and refresh rates are also supported.
Wide Screen SupportedYes
Physical Characteristics
Enclosure TypeAluminum
Product Height67 mm [2.6 in]
Product Length106 mm [4.2 in]
Product Width61 mm [2.4 in]
Weight of Product2032 g [71.7 oz]
Center Tip PolarityPositive
Input Current0.6 A
Input Voltage100 ~ 240 AC
Output Current1.5 A
Output Voltage12 DC
Humidity0% - 80 % RH (non-condensing)
Remote Unit ConnectorsRJ-45 Female Input
RJ-11 Female
HDMI (19 pin) Female Output
Local Unit ConnectorsVGA (15 pin, High Density D-Sub) Female Input
RJ-45 Female Output
RJ-11 Female
IrDA (Infrared, SIR/FIR) Female
HDMI (19 pin) Female Output
HDMI (19 pin) Female Input
DisplayPort (20 pin) Female Input
3.5 mm Mini-Jack (3 Position) Female Input
Plug TypeM
Power Consumption (In Watts)18
Power SourceAC Adapter Included
What's in the Box
Included in PackageCAT5 cable
HDBaseT scaler receiver
HDBaseT transmitter
IR blaster
IR receiver
quick-start guide
remote control
RJ-11 cable
RJ-11 to RS-232 adapter
sets of mounting brackets
sets of rubber feet
universal power adapter (NA/JP, EU, UK, ANZ)

SKU # AC23896 | Model # ST121HDBTSC

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