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VPort 461A Series

Superior video performance, 1-channel H.264/MJPEG industrial video encoders

moxa-vport-461a-series-image-1-(1).jpg | Moxa
moxa-vport-461a-series-image-2-(1).jpg | Moxa
moxa-vport-461a-series-image-3-(1).jpg | Moxa

Features and Benefits

  • Supports up to 4 video streams simultaneously for H.264 and MJPEG
  • Up to Full D1 resolution (720 x 480) @ 90 fps for 3 video streams with legacy analog video images
  • Video latency under 200 ms
  • 2 Ethernet ports for cascading or Ethernet port redundancy
  • DynaStream™ for optimized network efficiency
  • ONVIF support for standardization and interoperability
  • Local storage capability with SD card slot
  • Industrial design with -40 to 75°C operating temperature range


  • moxa-ce-certification-logo-image.png | Moxa
  • moxa-fcc-certification-logo-image.png | Moxa
  • moxa-ul-listed-certification-logo-image.png | Moxa
  • moxa-nema-ts2-certification-logo-image.png | Moxa
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The VPort 461A 1-channel industrial video encoder has a H.264 video compression algorithm that helps provide the best video quality on the market, but with a smaller bandwidth requirement than other video compression standards. In addition, to meet various video stream requirements, the VPort 461A can provide up to 4 video streams simultaneously using H.264 and MJPEG compression formats. Video streams can be used for different purposes, such as viewing, recording, and analysis. In addition, the rugged industrial design, which includes a -40 to 75°C operating temperature and industrial certifications, makes the VPort 461A suitable for harsh environments.

The VPort 461A is equipped with Moxa’s innovative DynaStream™ technology, which allows users to change the video frame rate automatically. With DynaStream™, users can control their network bandwidth budget and simplify network system management. The CBR Pro™ function helps to guarantee the lowest packet loss under limited bandwidth transmissions to ensure that images will not exhibit the mosaic effect.

  • SD Slot


  • Digital Input Channels


  • Digital Inputs

    +13 to +30 V for state 1
    -30 to +1 V for state 0
    Max. input current: 8 mA

  • Relay Channels


  • Contact Current Rating

    Resistive load: 1 A @ 24 VDC

  • Connector

    Terminal block

  • 10/100BaseT(X) Ports (RJ45 connector)


  • Protocols

    TCP/IP, IPv4/IPv6, UDP, HTTP, RTP/RTSP, ARP, UPnP, FTP, TFTP, SMTP, NTP Client, DNS, DDNS, QoS, IGMP v3, ICMP, SNMPv1/v2c/v3, Modbus TCP, HTTPS, 802.1X, NTCIP

  • Password

    User-level password protection

  • Filter

    IP address

  • Authentication


  • Encryption


  • LED Indicators

    STAT: Indicates if system is booted up properly or not
    Power 1: Power 1 on/off
    Power 2: Power 2 on/off
    FAULT: Can be configured to correspond to system alarm, power failure, or disconnected network
    Video: Video input signal
    PTZ: Indicates if PTZ or COM port data has been transmitted
    SD: Indicates if SD card was mounted successfully
    Network: 10 Mbps or 100 Mbps

  • PTZ Port

    1, RS-232 or RS-422/485 port, terminal block connector, 115.2 kbps

  • COM Port

    1, RS-232 or RS-485 port, DB9 male connector, 115.2 kbps

  • Console Port

    1 RS-232 port, 10-pin RJ45 (115200, n, 8, 1)

  • No. of Power Inputs


  • Input Voltage

    Redundant dual inputs

  • Operating Voltage

    12 to 32 VDC, 18 to 30 VAC

  • Input Current

    0.85 A @ 12 VDC, 0.3 A @ 32 VDC
    0.56/0.85 A @ 30/18 VAC

  • Power Connector

    2-pin terminal block

  • Video Compression

    H.264 (ISO/IEC 14496-10) or MJPEG

  • Video Input

    1, BNC connector (1.0 Vpp, 75 ohm)

  • Video Output

    via Ethernet

  • Video Streams

    4 independent H.264 or MJPEG video streams


    Auto-sensing or manual

  • Video Resolution and FPS (frames per second)

  • Video Viewing

    DynaStream™ support for changing the video frame rate automatically
    CBR Pro™ for good image quality in limited bandwidth transmissions
    Adjustable image size and quality
    Timestamp and text overlay
    OSD (On Screen Display) position adjustable
    Image manipulation: 180° rotation
    Image tuning: control brightness, contrast, saturation
    Maximum of 10 simultaneous unicast connections, 50 multicast clients

  • Audio Inputs

    1 Line-in or MIC-in with 3.5 mm phone jack

  • Audio Outputs

    1 Line-out, with 3.5 mm phone jack

  • Audio Format

    Mono, PCM (G.711)

  • VPort SDK PLUS

    Includes CGI commands, ActiveX Control, and API library for customized applications or system integration for third-party developers

  • Video Standards

    ONVIF Profile S

  • PTZ Camera Control

    Via PTZ port or COM port

  • PTZ Control Functions

    Pan, tilt, zoom, focus, move speed, preset position (max. 128 positions)

  • PTZ Function Updates

    Driver upload supported

  • Protocols

    Pelco D, Pelco P, Custom Camera

  • Intelligent Video

    Camera tampering detection

  • Video Motion Detection

    3 independently configurable areas

  • Scheduling

    Daily repeat timing schedule

  • Imaging

    JPEG snapshots for pre/trigger/post alarm images

  • Custom Alarms

    HTTP event servers for setting customized alarm actions

  • Email/FTP Messaging

    Automatic transfer of stored images via email or FTP as event-triggered actions

  • Pre-Alarm Buffer

    50 MB video buffer for JPEG snapshot images

  • Video Recording

    Event recordings stored on the SD card

  • Memory Size

    1 GB

  • Operating System

    Windows 7 or above

  • Browser

    Internet Explorer 9.x or above

  • Multimedia

    DirectX 9.0C or above

  • Housing


  • Dimensions

    46 x 134 x 105 mm (1.81 x 5.31 x 4.13 in)

  • Weight

    710 g (1.57 lb)

  • Installation

    DIN-rail mounting, Wall mounting (with optional kit)

  • Operating Temperature

    Standard Models: -25 to 60°C (-13 to 140°F)
    Wide Temp. Models: -40 to 75°C (-40 to 167°F)

  • Storage Temperature (package included)

    -40 to 85°C (-40 to 185°F)

  • Ambient Relative Humidity

    5 to 95% (non-condensing)

  • Altitude

    2000 m

  • EMI

    CISPR 32, FCC Part 15B Class A

  • EMS

    IEC 61000-4-2 ESD: Contact: 6 kV; Air: 8 kV
    IEC 61000-4-3 RS: 80 MHz to 1 GHz: 20 V/m
    IEC 61000-4-4 EFT: Power: 2 kV; Signal: 2 kV
    IEC 61000-4-5 Surge: Power: 2 kV; Signal: 1 kV
    IEC 61000-4-6 CS: 10 V
    IEC 61000-4-8 PFMF
    IEC 61000-4-11

  • Freefall

    IEC 60068-2-31

  • Safety

    UL 60950-1

  • Shock

    IEC 60068-2-27

  • Traffic Control

    NEMA TS2

  • Vibration

    IEC 60068-2-6

  • Time

    647,088 hrs

  • Standards

    Telcordia SR332

Software, Firmware, and Drivers


Name Type Checksum Version Operating System Release Date
Firmware for VPort 461A Series
37.0 MB
Dec 03, 2021 Dec 03, 2021 Release notes
SoftNVR-IA IP Surveillance Software Trial Version
48.1 MB
Software Package
  • Windows 7
  • Windows XP
Nov 08, 2017 Nov 08, 2017 Release notes
Software Package for VPort 461A Series (MIB file)
44.6 KB
Software Package
Sep 17, 2017 Sep 17, 2017 Release notes
Moxa VPort and EtherDevice Configurator Utility
1.6 MB
  • Windows
Apr 09, 2012 Apr 09, 2012 Release notes

Support Documents

Name Type Version Release Date
QIG for VPort 461A Series
3.7 MB
QIG v1.1 Aug 13, 2021 Aug 13, 2021
Datasheet for VPort 461A Series
889.2 KB
Datasheet v1.0 Nov 12, 2018 Nov 12, 2018
Manual for VPort 461A Series (Modbus address table)
235.7 KB
Manual v1.0 Mar 05, 2018 Mar 05, 2018
Manual for VPort 461A Series
5.6 MB
Manual v1.1 May 18, 2016 May 18, 2016
2D CAD for VPort 461A
146.8 KB
2D CAD Dec 23, 2015 Dec 23, 2015
Moxa SoftNVR-IA IP Surveillance Software User's Manual
3.6 MB
Manual v1.0 Apr 22, 2010 Apr 22, 2010

Available Models (2)

Show Images
moxa-vport-461a-t-image.jpg | MoxaVPort 461A-Tmoxa-vport-461a-image.jpg | MoxaVPort 461A
Video Interface1-channel analog video input1-channel analog video input
Audio Interface1 x line-in, 1 x line-out1 x line-in, 1 x line-out
Local StorageSD slot, SDXC interfaceSD slot, SDXC interface
Power InputRedundant power inputs with 2 x 12/24 VDC, 24 VAC power suppliesRedundant power inputs with 2 x 12/24 VDC, 24 VAC power supplies
Operating Temp.-40 to 75°C-25 to 60°C
MountingDIN-rail mount or Panel mount (with optional kit)DIN-rail mount or Panel mount (with optional kit)
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