W&T Web-IO 4.0 Digital, 12x Input, 12x Output – Ethernet TCP/IP Switching Signal Control and Monitoring Module 57730

In industrial automation and building management, engineers often need to control and monitor digital switching signals remotely over Ethernet. The W&T Web-IO 4.0 Digital module provides 12 potential-free inputs and 12 relay outputs, enabling direct integration with TCP/IP networks. Configure and operate it via a web browser, SNMP, Modbus/TCP, or OPC, making it suitable for distributed I/O applications, remote monitoring, and control tasks.

Key specifications

• 12 digital inputs (potential-free, 0-30V DC, low: 0-3V, high: 10-30V)
• 12 digital outputs (relay, normally open, max 30V AC/DC, 0.5A)
• Ethernet 10/100BaseT interface with TCP/IP, UDP, HTTP, SNMP, Modbus/TCP, OPC
• Power supply: 12-48V DC, typical consumption 1.5W
• DIN rail mounting (EN 50022), IP20 plastic housing
• Operating temperature: 0°C to +70°C
• Web-based configuration, email notification, SNMP traps

Why choose it

This module eliminates the need for dedicated fieldbus wiring by using standard Ethernet infrastructure. Its relay outputs can switch external loads directly, and the wide input voltage range accommodates various sensors and switches. The support for multiple protocols ensures compatibility with existing SCADA, PLC, or IT systems.

Ideal use cases

• Remote monitoring of digital signals (door contacts, limit switches, alarms)
• Controlling actuators, indicators, or small relays over a network
• Integrating legacy digital I/O into modern Ethernet-based systems
• Building automation and energy management applications

Good to know

The device is designed for DIN rail mounting and operates reliably in temperatures from 0°C to +70°C. Configuration is done through a web interface, and status can be monitored via SNMP or email alerts. The relay outputs are normally open and rated for up to 30V AC/DC at 0.5A.