Type | HDMI over Cat5e/Cat6 Extender |
Form Factor | Standalone |
Enclosure Color | Black |
Weight | 290 g |
Power Requirements | 12V DC, 1.5A |
Included Accessories | IR blaster and receiver, RS-232 cable, universal power adapter |
Power Consumption | Up to 6W |
Mounting Option | Wall-mountable |
STARTECH HDMI Over Cat5e HDBaseT Extender - 4K, ST121HDBTL





Key Benefits

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- Extends 4K HDMI signals up to 70 meters over standard Cat5e/6 cabling, reducing A/V infrastructure cost
- Integrated RS-232 and IR control for seamless communication with remote devices and displays
- TAA compliance and robust build from Taiwan make it suitable for government and enterprise installations
Product Overview
Extend HDMI over CAT6 or CAT5 cabling with RS232 serial and IR control - HDBaseT extender - Video extender - HDMI over CAT5 extender - CAT5 HDMI extender - HDBaseT extender - HDMI booster - HDMI CAT 5 extender - HDMI repeater - HDMI extensionSpecifications
Product Overview
Wireless Features
Wireless Capability |
Compliance & Origin
Country of Origin | Taiwan |
TAA Compliant | Yes |
RoHS Compliant | Yes |
Certifications | CE, FCC, REACH |
Advanced Security Features
Encryption Support | HDCP 1.4 (High-bandwidth Digital Content Protection) |
Content Protection | Yes (HDCP pass-through) |
Interfaces
Input Interface | 1 x HDMI (Type A) - TX unit |
Output Interface | 1 x HDMI (Type A) - RX unit |
Other Interfaces | 1 x RJ-45 (HDBaseT), 1 x IR In, 1 x IR Out, 1 x RS-232 (DB9) |
Extension Technology | HDBaseT |
Video Bandwidth | 10.2 Gbps |
Supported HDMI Features | HDCP 1.4, 3D Video, Deep Color |
Maximum Extension Distance (Cat5e) | 35 m (4K @30Hz) |
Maximum Extension Distance (Cat6) | 70 m (1080p) |
IR Control Support | Yes |
RS-232 Serial Control | Yes |
Physical & Environmental
Width | 2.6 in (66 mm) |
Depth | 3.6 in (92 mm) |
Height | 1.1 in (28 mm) |
Housing Material | Aluminum |
Operating Temperature | 0°C to 40°C (32°F to 104°F) |
Storage Temperature | -10°C to 60°C (14°F to 140°F) |
Humidity | 10% to 85% RH, non-condensing |
Cloud Management & Licensing
Cloud Management | No |
Licensing Requirements | No licenses required |