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Aluminium transmitter and receiver pair with HDMI RJ45 and audio ports status LEDs

STARTECH

STARTECH ST12MHDLNHK 1080p HDMI over IP v extender

SKU CH-5SMK-EDHFK MPN ST12MHDLNHK

Extends 1080p HDMI up to 50 ft over Cat5e with IR control and rack-mountable aluminium units

  • HousingAluminum
  • Supported resolutions1920 × 1080 60 Hz
  • Sound2-channel
  • HDMI portsLocal Unit: 1 x HDMI (19-pin) Female Input Remote Unit: 1 x
  • Connection typeLocal Unit: 1 x RJ-45 Female Output Remote Unit: 1 x RJ-45 F
  • Audio connectionLocal Unit: 1 × 3.5 mm Mini-Jack (3 Position) Female Remote
  • Distribute HDMI video across your existing LAN infrastructure
  • Supports 1920 x 1080 resolution at 60 Hz for HD quality
  • Extends signal up to 50 ft over Cat 5e cabling
  • Includes IR remote control for source device management
  • Compact aluminum housing measures 1.10 x 3.80 x 5.10 inches

1080p HDMI over IP extender for digital signage

The STARTECH ST12MHDLNHK transmits 1920 x 1080 60 Hz video over a local area network using Cat 5e UTP or better cabling. It supports 2-channel audio and infrared control across the same link. The kit is designed for scalable digital signage deployments in commercial environments. Rack-mountable aluminum housings suit professional installations.

Simple network installation with included hardware

Each unit connects via a single RJ-45 port and draws power from a supplied USB Mini-B 5V DC adapter accepting 100 ~ 240V AC input. The package provides two universal power adapters, mounting brackets, two CAT5 cables, a plastic screwdriver, an IR remote, and two USB-A to Mini USB-B cables. Status LEDs on both transmitter and receiver confirm link integrity. Daisy-chain capability allows expansion without extra switch ports.

Extends 1080p signals up to 50 ft over copper

The extender delivers full HD resolution at 60 Hz over a maximum cable length of 50 ft. It handles 2-channel audio and IR pass-through within that distance. Beyond 50 ft the signal cannot be guaranteed without additional network infrastructure. The 0.99 lb units fit standard racks and operate from a 1A 5V DC supply drawing 0.3A at the adapter input.

How it compares

Measured against everything we stock in A/V Extenders & USB Hubs, at today’s prices. Recalculated every night.

Price $353.99
Pricier than about 85% of the 239 comparable items (median $132.99).

Specifications

Product
Brand nameStarTech.com
Model nameST12MHDLNHK
Display
Supported resolutions1920 × 1080 60 Hz
Audio & video
Sound2-channel
Audio connectionLocal Unit: 1 × 3.5 mm Mini-Jack (3 Position) Female
Remote Unit: 1 × 2.5 mm Mini-Jack (3 Position) Female
Connectivity
Connection typeLocal Unit: 1 x RJ-45 Female Output
Remote Unit: 1 x RJ-45 Female Input
Ports & slots
HDMI portsLocal Unit: 1 x HDMI (19-pin) Female Input
Remote Unit: 1 x HDMI (19-pin) Female Output
Additional connectorLocal Unit: 1 x Infrared Female
Remote Unit: 1 x Infrared Female
Power
Power supplyInput Current: 0.3A
Input Voltage: 100 to 240 V AC
Output Current: 1A
Output Voltage: 5 V DC
Plug Type: USB Mini-B (5-pin)
Power Source: AC Adapter Included
Size & build
Product dimensions1.1 in × 3.8 in × 5.1 in
Product weight0.99 lb (0.45 kg)
Shipping weight2.27 kg
Package size406 × 305 × 254 mm
In the box
Included items1 x HDMI over IP transmitter
1 x HDMI over IP receiver
2 x universal power adapters (NA, EU, UK, ANZ)
2 x mounting brackets
2 x CAT5 cables
1 x plastic screwdriver
1 x IR remote control
2 x USB-A to Mini USB-B cable
1 x DB9 to 2.5 mm serial adapter cable
1 x IR blaster
1 x IR receiver
8 x rubber feet
1 x instruction manual
More details
HousingAluminum
Indicator light1 x status LED (transmitter)
1 x status LED (receiver)

Questions about this item

How can I verify the extender is working after I connect it?

The transmitter and receiver each have a status LED that lights when the units are powered and linked.

What comes in the box and what must I buy separately?

The kit includes one transmitter, one receiver, two universal power adapters, two mounting brackets, two CAT5 cables, a plastic screwdriver, an IR remote and two USB-A to Mini USB-B cables; no extra items are required for a basic point-to-point link.

Which resolution and distance version should I choose for a 1080p display 50 ft away?

This model supports 1920 x 1080 at 60 Hz over Cat 5e or better cable up to 50 ft, matching that requirement exactly.

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