EHG7704 Series

4-port Industrial Managed Gigabit PoE Switch

  • Powerful switching platform, supporting redundancy protocols, such as ERPS/RSTP/STP/MRP and compatible rings
  • IEEE 1588v2 Precision Time Protocol HW-Based TC/BC
  • CE/FCC/UL certificated with wide operation temperature -40°C to +75°C
  • Compliance with IEC62443-4-1 development and functions requirements
  • Slim type housing for limited space
Coming soon
EHG7704 Series

The EHG7704 Series is an Industrial Grade Managed Gigabit Ethernet PoE Switch. UL, CE and FCC certified, it provides highly reliable, fault tolerant, extremely fast network connections in harsh environments.


Versatile high performance: Within its compact DIN-Rail slim type housing design, the EHG7704 series allows you to choose between different port combinations: 1G BASE-T(X) RJ45, IEEE 802.3af/at/bt compliant PoE RJ45, 1G BASE-X SFP and 2.5G Base-X SFP, achieving maximal network performance to suit your exact needs.

High power and redundancy:  All models have two terminal blocks to provide dual redundant power inputs with reverse polarity protection, enabling stand-alone fault alarm systems.

Reliability and security: Set up a reliable network environment through RSTP, ERPS Rings and MRP (Manager/Client) redundancy and keep equipment connected all the time, even in case of temporary network breakdowns. And to prevent network intrusions, EHG7704 supports user account, password policy, and authentication interface
managements functions that comply with the IEC62443 standard.

Industry-specific features: Having undergone environmental testing to ensure reliable performance under a variety
of power supply conditions, this switch series is fully compliant for today’s demanding railway applications, as well as complying with essential ground equipment standards. It can also function as an IEEE 1588 hardware-based boundary or transparent clock, offering precise transmission for time-sensitive processes.


As the capabilities of connected devices continue to improve with technologies like 5G and Wi-Fi 6, networks must also be able to handle faster transmission speeds. 2.5 Gigabit Ethernet (2.5 GbE) supports speeds between 1Gbps and 10Gbps, achieving upgrade for network performance without a complete infrastructure overhaul.

The EHG77xx switch is equipped with 2.5 Gbps SFP slots, making it a powerful tool for connecting advanced applications such as high-resolution CCTV and public Wi-Fi. It can replace slower switches in existing topologies, allowing old and new devices to operate at their full potential.

On the other hand, applications like pan-tilt-zoom (PTZ) cameras and devices that work under extreme weather conditions need higher power, over 30 W, to operate. EHG77xx’s 802.3bt PoE ports provide up to 90 W per port, eliminating the need for additional power supply and cables on-site.


Switch Properties
Priority Queues8
VLAN Table4096
MAC-Based VLAN512
VLAN ID RangeVID 1 to 4094
Trunk Group4
Static IGMP Groups128
Dynamic IGMP Groups256
MAC Table Size4K
Packet Buffer Size1.75 Mb
Jumbo Frame9216 Byte
StandardsIEEE 802.3af/at/bt for Power-over-Ethernet
IEEE 802.3/802.3u for 10BASE-T/100BASE-T(X)
IEEE 802.3ab for 1000BASE-T
IEEE 802.3z for 1000BASE-X
IEEE 802.3x for Flow Control
IEEE 802.1d-2004 for Spanning Tree Protocol
IEEE 802.1w for Rapid Spanning Tree Protocol
IEEE 802.1s for Multiple Spanning Tree Protocol
IEEE 802.1q/p for VLAN Tagging and Class of Service
IEEE 8021x for Authentication
IEEE 802.3ad for Port Trunk with LACP
ProtocolsIPv4, IPv6, IGMPv1/v2/v3, IGMP Snooping, GARP, GMRP, GVRP, SNMPv1/v2c/
v3, SNMP Inform, ICMP, Telnet, SSH, Client/IP-port-mapping, BootP, TFTP, SMTP,
SMTP (Gmail), RMON, HTTP, HTTPS, Syslog, MRP (Manager/Client), LLDP, 802.1x,
EAP,RADIUS, TACACS+, Mirror port, QoS, ACL, ITU-T G.8032 ERPS Ring, STP, RSTP,
MSTP, Compatible Ring/Chain, U-Ring, NTP Server/Client, Serial Console,Modbus/
TCP, IEEE 1588 PTP V1/V2,UDLD, Security, PoE, Trunk, LACP, MLD, 802.1Q VLAN,
Port-Based VLAN, MAC-Based VLAN, IP-Subnet-Based VLAN, Protocol-Based VLAN,
QinQ, 802.1x, ARP spoof Prevention, DHCP snooping, IP source Guard, Dynamic ARP
Inspection, DHCP relay Agent, OAM, sFlow, PoE continue
RedundancyITU-T G.8032 ERPS, STP, RSTP, MSTP, MRP(Manager/Client), Compatible Ring/Chain, U-Ring
Time SynchronizationVID 1 to 4094NTP Server/Client, SNTP
Network SynchronizationIEEE1588 hardware-based TC End-to-End and Peer-to-Peer
IEEE1588 hardware-based BC
Automation ProfilesModbus/TCP device status registers provided
RFC 1157, RFC 1213, RFC 1215, RFC 1493, RFC 1643, RFC 1757, RFC 2011, RFC
2012, RFC 2013, RFC 2233, RFC 2571, RFC 2742, RFC 2819, RFC 2863, RFC 3411,
RFC 3412, RFC 3413, RFC 3414, RFC 3415,
Input Voltage9-57 VDC for Non-PoE models
45-57 VDC for 802.3af mode
53-57 VDC for for 802.3at/bt
Input Current (System)2.2A Max. for Non-PoE models
4.5A Max. for 802.3af mode
3.8A Max. for for 802.3at/bt
Power Consumption (System)10W Max. @57Vdc, for Non-PoE models
195W Max. @57Vdc, for 802.3af mode
195W Max. @57Vdc, for for 802.3at/bt
Connector5-Pin 5.08mm Lockable Terminal Block
Reverse Polarity ProtectionYes
RJ45 PortsUp to 8 10/100/1000BASE-T(X) auto negotiation speed
Fiber Optics PortsUp to 2 x 1000BASE-X SFP and 2 x 2500Base-X SFP
LED IndicatorsPWR1, PWR2, Alarm, Run, Ring, Ring Master, RJ-45 Link/Speed, SFP Link, PoE
ConsoleRS232 (RJ45 connector)
Relay Output2 relay outputs with current carrying capacity of 1A @ 24 VDC
DIP SwitchesRing Control
ButtonReset Button
Physical Characteristics
HousingIP30 aluminum housing
Dimension (W x H x D)EHG7704/06/08(C): 168 x 135 x 32mm
EHG7711: 168 x 135 x 55mm
InstallationDIN-Rail , Wall mount (optional kit)
Environmental Limits
Operating Temperature-40°C to +75°C (-40°F to +167°F)
Storage Temperature-40°C to +85°C (-40°F to +185°F)
Ambient Relative Humidity5% to 95%, 55°C (Non-condensing)
SafetyUL/EN/IEC (CB) 62368-1
EMIFCCFCC Part 15, Subpart B, Class A
CEEN 55032:2015/A11:2020 Class A
EN 61000-6-4: 2007 + A1: 2011
EN 61000-3-2: 2014, Class A
EN 61000-3-3: 2013
EMSCEEN 55035 :2017/A11:2020
EN 61000-6-2 2005
IEC 61000-4-2ESDContact Discharge
Air Discharge
IEC 61000-4-3RS80-1000MHz
IEC 61000-4-4EFTDC Power Port
Signal Port
IEC 61000-4-5SurgeDC Power Port
DC Power Port
Signal Port
Line-to-Line ±0.5kV
Line-to-Earth ±1.0kV
Line-to-Earth ±1.0kV
IEC 61000-4-6CS0.15-80MHz10V rms3
IEC 61000-4-8PFMFEnclosure30 V/m4
MIL-STD-810G Method 516.5
MIL-STD-810F Method 516.5
MIL-STD-810F Method 514.5 C-1 & C-2
MTBF20 Years


Front View
Rear View
Side View
Front & Bottom View
Model namePart NumberDescription
1000Tx RJ45PoE bt100/1000 SFP100/1000/2500 SFP1588 support
Model namePart NumberDescription
WMK-450-Black70100000000050GSECC wall mount kit
CBL-RJ45(8P)-DB9(F)-90-C50891971GRJ45 to DB9 Female Cross Over Console Cable, 90cm
SDR-75-2450500752240001G75W/3.2A DIN-Rail 24VDC power supply 88~264VAC /

124~370VDC input
SDR-240-4850502401480001G240W/5A DIN-Rail 48VDC power supply 88~264VAC /

124~370VDC input
AXGD-5854-0513522AXGD5854001GSFP Transceiver, 1250Mbps, 850nm, Multi-mode, 550m, 3.3V,

-40 to +85°C, DDMI
AXGD-1354-0523522AXGD1354001GSFP Transceiver, 1250Mbps, 1310nm, Multi-mode, 2km, 3.3V,

-40 to +85°C, DDMI
AXGD-1354-0533522AXGD1354011GSFP Transceiver, 1250Mbps, 1310nm, Single-mode, 10km, 3.3V,

-40 to +85°C,DDMI
AXGD-3354-0593522AXGD3354001GSFP Transceiver, 1250Mbps, 1310nm, Single-mode, 40km, 3.3V,

-40 to +85°C,DDMI


Version Name Time Size Download
v3.2 EHG7704 Firmware 2024-07-05 15.91 MB


Version Name Time Size Download
v1.3 Datasheet EN 2024-07-05 542.68 KB
v1.0 Datasheet EN 2024-07-05 503.2 KB


Version Name Time Size Download
v1.0 EHG7704 User Manual 2024-05-30 12.68 MB

Hardware Installation Guide

Version Name Time Size Download
v1.2 EHG7704 Hardware Installation Guide 2024-07-05 2.38 MB

STP/DXF drawings

Version Name Time Size Download
EHG7704 STP 2024-07-05 13.76 MB

Test reports

Version Name Time Size Download
EHG7704 CB 62368-1 2024-07-05 3.37 MB
EHG7704 UL 62368-1 2024-07-05 361.07 KB
EHG7704 Certifications CE 2024-07-05 8.29 MB
EHG7704 Certifications FCC 2024-07-05 1.12 MB

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