AV Extender StarTech.com ST121HD20L HDMI over CAT6 4K 60Hz 330 ft. Wired - ST121HD20L
AV Extender StarTech.com ST121HD20L HDMI over CAT6 4K 60Hz 330 ft. Wired - ST121HD20LHigh-definition installations requiring long-distance video extension benefit from the StarTech.com ST121HD20L AV extender. Designed for professional environments, this device easily transmits HDMI signals over CAT6 cabling up to 330 feet, making it ideal for conference rooms, classrooms, and large venues.
Supporting 4K resolution at 60Hz, it delivers crisp, detailed images without latency. The AV transmitter and receiver setup ensures reliable wired connectivity, with HDCP compliance for secure content playback, making it the perfect solution for digital signage applications.
- Resolution: 4K at 60Hz
- Distance: 330 ft. (100 m)
- Transmitter & Receiver: Includes both units
- Cable type: HDMI over CAT6
- Compliance: HDCP
- Color: Black
- Wired connectivity: Yes
Built for IT professionals and AV integrators needing reliable, high-quality HDMI signal transmission across extensive setups.
Available stock: 28
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Estimated delivery: Oct 03 - Oct 07
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| Features | |
|---|---|
| Type | AV transmitter & receiver |
| Maximum resolution | 3840 x 2160 pixels |
| Cable types supported | Cat6 |
| Maximum transfer distance | 140 m |
| Chipset | Norelsys NS 5730, NS5731 |
| Maximum refresh rate | 60 Hz |
| Audio output channels | 7.1 channels |
| LED indicators | Link, Power |
| Supported graphics resolutions | 1280 x 720 (HD 720), 1920 x 1080 (HD 1080), 1920 x 1200 (WUXGA), 2560 x 1600 (WQXGA) |
| HDCP | Yes |
| Material | Metal |
| HDCP version | 1.4/2.2 |
| Product colour | Black |
| Ports & interfaces | |
| Connectivity technology | Wired |
| RJ-45 input ports | 1 |
| RJ-45 output ports | 1 |
| HDMI in | 1 |
| Number of HDMI outputs | 1 |
| Serial ports quantity | 2 |
| Remote (IR) input | 2 |
| Remote (IR) output | 2 |
| DC-in jack | Yes |
| Power | |
| AC input voltage | 110 - 240 V |
| Operating voltage | 5 V |
| Output current | 2 A |
| External power adapter | Yes |
| Power plug type | Type M |
| Operational conditions | |
| Operating temperature (T-T) | -5 - 40 °C |
| Storage temperature (T-T) | -15 - 55 °C |
| Operating relative humidity (H-H) | 0 - 95% |
| Weight & dimensions | |
| Width | 111 mm |
| Depth | 76 mm |
| Height | 26 mm |
| Weight | 271 g |
| Packaging data | |
| Package width | 248 mm |
| Package depth | 185 mm |
| Package height | 95 mm |
| Package weight | 1.42 kg |
| Packaging content | |
| AC adapter included | Yes |
| Cables included | LAN (RJ-45) |
| Included power plug types | ANZ, EU, JP, NA, UK |
| Quick start guide | Yes |
| Mounting brackets included | Yes |
| Logistics data | |
| Master (outer) case width | 520 mm |
| Master (outer) case length | 420 mm |
| Master (outer) case height | 280 mm |
| Products per master (outer) case | 10 pc(s) |

