SIG-5600 ezTCP 4-Port Ethernet & WiFi I/O Gateway

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The ezTCP SIG-5600 by Sollae Systems is a remote I/O gateway equipped with 4 analog input ports, 4 digital input ports, 4 digital output ports, an Ethernet, and a WiFi interface. The device can collect data from various analog sensors, monitor and control the states of equipment from remote data centers or HMI devices via Modbus TCP protocol. The device can also be monitored and controlled by any Modbus TCP software/app, such as ModMap.

Each individual analog port has three selectable measured modes: voltage (0 ~ 5V), current (4~20mA), and current (0 ~ 20mA). This makes a single SIG-5600 able to work with many kinds of analog sensors.

Each individual digital input port also has a counter function. This makes it able to not only monitor ON/OFF state but also count either falling or rising events.

Each individual digital output port has a relay with both NO (Normal Open) and NC (Normal Closed) mode. Apart from ON/OFF control, each digital output can also generate a pulse when receiving a specific Modbus TCP request from a remote device, software, or smartphone app.

With both Ethernet and WiFi interfaces, SIG-5600 can connect to the Internet, either wired or wirelessly.

The SIG-5600 supports up to four TCP connections simultaneously, enabling to monitor sensors from different HMI / software / apps at the same time.


  • 4 analog input ports: voltage or current
  • 4 digital input ports: Wet contact or Dry contact input
  • 4 digital output ports (Relay): both NO and NC output
  • Supports pulse mode on digital output ports
  • Supports counter function on digital input ports
  • Supports Modbus/TCP
  • Supports multiple TCP connections (Max. 4 channels)
  • Supports a master mode for the Internet Switch
  • Supports a 1-bit ADC function for the Internet Switch
  • Free Modbus/TCP program
  • Industrial temperature range (-40℃ ~ +85℃)


  • Digital Input
    • Input Type: Dry Contact / Wet Contact / NPN / PNP
    • Input Voltage Range: 2.5V ~ 25V
    • Number of Ports: 4
  • Digital Output
    • Output Type: Relay (Type C - NO: Max DC 30V/5A with resistive load, NC: Max DC 30V/1A with resistive load)
    • Number of Ports: 4
  • Analog Input
    • Input Type: Voltage (0V ~ 5V) or Current (4mA ~ 20mA / 0mA ~ 20mA)
    • Resolution: 12 bits
    • Number of Ports: 4
  • Network Physical Interface
    • Wired Lan:
      • Network Interface: 10Base-T/100Base-TX Ethernet(RJ45)
      • Ethernet Speed: Auto Sense
      • 1:1 or Cross-over Cable Auto Sense
      • 1000 VAC Isolation
    • Wireless LAN:
      • IEEE802.11b/g Wireless LAN with a USB dongle
  • Software Functions
    • Wireless LAN Mode: Infrastructure
    • Protocols: IPv4/IPv6 Dual Stack
      ICMP, DHCP, Modbus/TCP, mDNS
      WPA-PSK / WPA2-PSK, WPA-Enterprise (TTLS / PEAP)
  • Indicators
    • LEDs: PWR, RUN, STS, LINK, MTX, MRX, Di0~Di3, Do0~Do3
  • Management
    • spFinder: Configuration and Monitoring Tool
    • Access Security: Password
  • Dimensions
    • Size: 180mm x 110mm x 26mm (7.1 x 4.3 x 1 inches)
    • Weight: About 485g (17.1 ounces)
  • Operating Environment
    • Input Voltage:
      • PWR1 - Terminal Block, DC 8.5V~38V
      • PWR2 - DC jack, DC 5V±0.5V
      • USB (Setup) - micro-USB, DC5V±0.5V
    • Protection: Reverse Voltage Protection / Surge Protection
    • Power Consumption: Typically 3.3W
    • Operating Temperature: -40℃ ~ +85℃
    • Storage Temperature: -40℃ ~ +85℃
  • Certifications
    • KC Registration(KN 32, KN 35)
    • CE EMC 2014/30/EU, RoHS 2011/65/EU
    • FCC FCC Part 15 Subpart B, Class A

Package includes:

1X SIG-5600 ezTCP 4-Port I/O Gateway

The delivery of this item is stock to 2 weeks. Please contact us prior to placing your order for a specific delivery time. 

Documentation & Resources:

SIG-5600 ezTCP 4-Port I/O Gateway Product Web Page