IIoT Gateway
IEG-3000 Series

Hardware Features

  • 2 x 10/100 RJ45
  • 2 x  RS-232/RS-422/RS-485
  • 2 x  DI/2-port AI
  • IP30 Metal housing

Wi-Fi (IEG-3000W) 

​​Wi-Fi & 4G LTE (IEG-3000WL)

IEG-3000 is an industrial IoT gateway with 2 10/100Base-TX Ethernet port, 2 serial ports, 2 Digital Input & 2 Analog Input ports, wireless (Wi-Fi) connection and 2 Micro SIM slots 4G LTE module. Both wireless modules can work simultaneously. It helps operating engineers to monitor all factory stages even from wireless devices and predict production failure in

IEG-3000 permits different protocol devices to coexist at an Ethernet-based interface and data protection is assured with its VPN functions. It supports MQTT and Modbus RTU to TCP protocols to transmit the data from sensors to the SCADA server through the Ethernet network. This way, non-Ethernet base PLCs, sensors, factory machines and wireless devices interact in an industrial Ethernet network for automation.


MQTT messaging protocol support
Supporting MQTT (Message Queuing Telemetry Transport) for data exchange between clients and the server. Modbus RTU to Modbus TCP
Capable of converting serial to TCP/IP protocol for communication between serial devices and the SCADA system.
Communication through Wi-Fi connection
IEG-3000 supports 2.4 GHz Wi-Fi wireless band connection, and it can operate in AP mode or client mode or AP+client modes. IEG-3000 also supports SMA connectors
to have external antennas connection flexibility.
Secure and Easy-to-use VPN Connection
Capable of creating a secure VPN (Virtual Private Network), IEG-3000 is “VPN client” and can create the VPN tunnel with “VPN server” (Cloud). Using IEG-3000, you
can instantly access your office resources through a secure VPN connection.

Digital Input and Analog Input

It has 2 DI and 2 AI input ports to receive analog inputs and digital inputs. The analog input type (Voltage or Current) can be selected using DIP switch.

Hardware Configuration
Ethernet Interface 2 x LAN 10/100BASE-TX RJ45 ports
Serial Interface 2 x (RS-232/422/485)
Connector type: terminal block (1 x 5 pins)+ 1 x DB9
RS-232: (TxD, RxD, GND)
RS-422/RS-485: (T+,T-,R+,R-), (D+, D-), GND
Baud rate: 300bps~460kbps
Optical Isolation: 3KV
ESD Protecion: 15KV
Surge Protecion: 6KV
Over Current Protection: Yes
Wireless - Wi-Fi SMA Connectors: 1 x 2dBi
1T/1R, 802.11b/g/n
Internal Module Interface 1 x Mini PCIe for LTE
Wireless - LTE* SMA Connector: 2
4G LTE: Yes
SIM card number: 2
SIM card type: Micro SIM
Digital Input 2 x pairs, Wet Contact
Voltage level : On (6.2~50VDC), Off (4VDC max)
Input Impedance: 10k ohm
Overvoltage Protection: 70VDC
Digital Output
(Alarm Relay output)

Alarm Relay Contact (DO): 1,

10~40VDC, max 650mA

Analog Input 2 x pairs
Contact Parameters
Voltage : ±10 VDC
Current: +4 ~ +20 mA
Resolution: 16bit
Accuracy: 0.1% FSR
Sampling rate: 10Hz
Input Impedance: Voltage: 2M ohm, Current: 140 ohm
Overvoltage protection 240Vrms
Overcurrent protection: 50mA@110VDC



Connector Type: Terminal Block

Power input voltage: 9~48VDC
Dual Power Input Support

Power Consumpion System: <6W (without LTE module)
Grounding Screw Yes
Reset Button 2~5 sec reboot: Yes
>5 sec Factory default: Yes
Watch Dog Yes


Mechanical and Environment
Operating Temperature : -40ºC~70ºC (-40ºF~150ºF)
Humidity 5~95%
Dimension (WxDxH) 75x106x136mm
Weight 850g (without Antenna)
Housing Metal, IP30
Mounting DIN Rail


Radio EN300 328, EN301 893, EN301 489
EMC FCC Part 15,
EN 55022 (2006/A1: 2007) Class A
IEC 61000-4-2(ESD) Level 3,
IEC 61000-4-3 (RS) Level 3
IEC 61000-4-4 (EFT) Level 3,
IEC 61000-4-5 (Surge) Level 3
IEC 61000-4-6 (CS) Level 3,
IEC 61000-4-8 Level 3
Shock IEC60068-2-27
Free Fall IEC60068-2-32
Vibration IEC60068-2-6


Software Features
Serial Port Serial Port Protocol:
TCP client, TCP server, UDP, Modbus RTU to Modbus TCP, Modbus TCP to Modbus RTU
Serial Type Selection:
RS-232, RS-422, RS-485
Baud Rate Setting: 300~460kbps
Parity: None, Odd, Even, Mark, Space
Data Bits: 5,6,7,8 (RS-232)
Stop Bits: 1,2 (RS-232)
Flow Control: None,(RS-232)
Termination (enable/disable): Software selectable (RS-485)
Wireless (WiFi) WiFi Mode: AP mode / Host mode (Software Configurable)
WiFi Security: Encryption - No/Yes,WPA/WPA2,WPA-PSK SSID, Hide SSID, Channel setting
WiFi Standard Setting: IEEE 802.11b, IEEE 802.11g, IEEE 802.11n Auto
Management Data Acquisition: MQTT client, MQTT Broker
IP Address: Management IP address/subnet mask, Default Gateway, DHCP Client, IPv4
Time: Manual Setting, SNTP, Daylight Saving
Management Interface: HTTP, Telnet, SSH
Firmware upgrade: TFTP, HTTP
Configuration file: Backup / Restore

Volktek continues to develop client-valued functions. Please call us for more details.



File name Version Download
IEG-3000 Series Datasheet 1.0
IEG-3000-WL Photo 1.0
IEG-3000-W Photo 1.0
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