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    SECO-LARM MVE-AH1H1-42YQ — 4K Enhanced HDMI Long Range Extender Installation Manual

    September 08, 2026 3 min read

    Installation manual for the SECO-LARM ENFORCER MVE-AH1H1-42YQ 4K Enhanced HDMI Long Range Extender.

    💾 Download Original PDF 🛒 View Product
    Full text manual (for reference)

    Installation manual for the SECO-LARM ENFORCER MVE-AH1H1-42YQ 4K Enhanced HDMI Long Range Extender — an active transmitter/receiver kit that sends video, audio, RS-232, and bi-directional IR over a single Cat5e/6 cable, with 1080p signals reaching up to 492ft (150m) and 4K2K/UHD reaching up to 394ft (120m).

    Key Features

    • Extends 1080p up to 492ft (150m) and 4K2K up to 394ft (120m).
    • Supports resolutions from 480i to 4K2K/UHD; 18Gbps video bandwidth.
    • Plug-and-play — comes as a complete transmitter/receiver set.
    • HDCP 2.2/1.4 and DVI 1.0 compliant.
    • Transmitter includes an HDMI loop output; receiver has an analog stereo output.
    • Bi-directional IR, RS-232, and CEC pass-through.
    • Supports HDR, HDR10+, Dolby Vision, and HLG.
    • Includes one 24VDC power supply — either end can power the whole set.

    Parts Included

    1x Transmitter, 1x Receiver, 1x IR Transmitter, 1x IR Receiver, 1x 24V Power adapter, 4x IR Mounting clips, 2x 3-Pin phoenix connectors, 1x Manual.

    Specifications

    Input video signal 3.3V
    Input DDC signal 5Vp-p (TTL)
    Maximum single link range 4K2K@60Hz
    Deep color 48-bit
    Video formats supported All HDMI 3D, HDCP 2.2
    Audio formats supported LPCM 2.0/2.1/5.1/6.1/7.1, Dolby Digital, Dolby TrueHD, Dolby Digital Plus (DD+), DTS-ES, DTS HD Master, DTS HD-HRA, DTS-X
    L/R audio formats PCM 2.0
    Output video HDMI
    Resolutions supported 4K2K@50/60Hz, 4K2K@30Hz, 1080p, 1080i, 720p, 720i, 480p, 480i
    Range 1080p: 492ft (150m)  |  4Kx2K: 394ft (120m)
    Video amplifier bandwidth 18Gbps
    Video input connector HDMI Type A 19-pin female
    Max. HDMI cable length 4K@60Hz: 16' (5m)  |  4K@30Hz: 32' (10m)  |  1080p@60Hz: 50' (15m)
    Cat5e/6 wiring standard T568-B
    IR pass-through 20–60kHz
    Operating voltage 24VDC
    Power supply 1A@24VDC (1 adapter)
    ESD protection (human body model) ±8kV (air-gap discharge), ±4kV (contact discharge)
    Current draw (both units total) 390mA
    Operating humidity 20–90% (non-condensing)
    Operating temperature 32° to 104°F (0° to 40°C)
    Dimensions 5-1/2"x11/16"x2-9/16" (140x18x65mm)
    Weight Transmitter 5.6 oz (160g); Receiver 5.5 oz (155g)

    Installation

    1. Determine the transmitter and receiver locations and how much Cat5e/6 cable is needed.
    2. Connect an HDMI cable between the transmitter and the source device.
    3. Connect an HDMI cable between the receiver and the display.
    4. Connect the Cat5e/6 cable between the receiver and transmitter.
    5. Connect the included 24VDC power adapter to either the transmitter or receiver — only one power supply is needed for the whole set.
    6. For remote control of a device: plug the IR transmitter into the IR-OUT of the extender unit closest to the device being controlled, pointing it at the device's IR window; plug the IR receiver into the IR-IN port of the other extender unit, positioned so it can see the remote's signal. Maximum IR transmission distance is 26ft (8m) in a direct line of sight, reduced to about 16ft (5m) at roughly 45°.
    7. Optionally connect an RS-232 controller to the transmitter's RS-232 terminal and the controlled device to the receiver's RS-232 terminal.
    8. Optionally connect powered speakers to the receiver's Audio Out.
    9. Optionally connect a monitor to the transmitter's HDMI Loop Out.

    Notes: Use high-quality Cat5e/6 cable, especially at longer distances, and premium high-speed HDMI cables. Keep both cable types within the maximum lengths above.

    HDBT Port LED Status (Fig. 1)

    Link LED Steady on = Good  |  Flashing = Poor  |  Off = None
    Data LED Steady on = HDMI with HDCP  |  Flashing = HDMI only  |  Off = No HDMI or HDCP

    Troubleshooting: HDMI Device Does Not Function Correctly

    • Use T568-B wiring standard.
    • Make sure the maximum lengths are not exceeded for either the HDMI or Cat5e/6 cable used.
    • Test the Cat5e/6 cable between the receiver and transmitter to confirm it is functional.
    • Check for problems with the HDMI source, cables, or display by connecting the source directly to the display.
    • Make sure the transmitter and receiver are plugged into the correct units.
    • Make sure the HDMI source is compatible with the HDMI display.

    Warranty

    This SECO-LARM product is warranted against defects in material and workmanship for one (1) year from the date of sale to the original customer, limited to repair or replacement at SECO-LARM's option.