W&T connects
Interfaces for TCP/IP, Ethernet, RS-232, RS-485, USB, 20mA, glass and plastic fiber optic cable, http, SNMP, OPC, Modbus TCP, I/O digital, I/O analog, ISA, PCI
Data sheet:

Web-IO Digital 12xIn, 12xOut

  • View high-resolution photo

Switch, monitor and count ...

With the Web-IO Digital you can control, acquire and monitor switching signals via TCP/IP Ethernet. Numerous Web and network services are available for reporting changes on the inputs and outputs. Remote control over the internet requires in the simplest case just a browser or smartphone.


Switching signals:

  • 12 switching inputs
    • Digital 24V inputs
    • 32-bit pulse counter
  • 12 switching outputs:
    • Digital 24V outputs
      (12V, 48V, 110V, 230V via coupling relays)
    • Drive up to 500 mA
    • Short-circuit-protected


  • Intuitive Web interface for simpler operation
    • Select between German or English
    • Switching the outputs directly from the Web interface
    • Adaptation for smartphone
  • Time-controlled switching
    • Switching times configured via online calendar
    • Switching times transferred as an iCal file (*.ics)
  • Box-to-Box
    • Pass switching signals over the network 1:1
  • Alarm and reporting function:
    • Email for alarm sending or as status report
    • SNMP polling / alarm traps
    • Configure up to 12 alarm messages
  • Dynamic integration into other Web sites:
    • Direct access to current measurement values via AJAX, JavaScript and Java applet
  • Additional software interfaces for incorporating into your systems/databases:
    • OPC
    • Modbus TCP
    • Syslog
    • TCP and UDP sockets, client and server
    • FTP (data logging)
  • Possible applications:
    • Remote monitoring and fault messaging
    • Cross-location switching
    • House and building automation
    • Process monitoring and visualization
    • Light, gate and cabinet control
    • Machine Data Collection (MDC)
    • More uses can be found here.

Power supply:

  • External
    • Screw terminal
    • 12 - 24V DC

Standards & more

  • Conforms to standards both in office and industrial environments:
    • High noise resistance per EN 61000-6-2
    • Low noise emission per EN 55032:2015 + A1 Cl. B, EN 61000-3-2 & EN 61000-3-3
  • 5 year guarantee

Technical data:

Connections, displays and control elements:

Digital outputs:   12 x digital outputs 6V - 30V, 500mA
    Grouping of 2 outputs
Grouping of 4 outputs
    Maximum group current 2 A
    Maximum total current 6 A
    Using our coupling relays voltages of even up to
230V can be switched
Digital inputs:   12 x digital inputs,
  Max. input voltage +/-30 V
  Protected against polarity reversal within this range
  Switching threshold 8V +/- 1V
  "On" current = 2.2 mA
    integrated 32-bit counter
Network:   10 / 100BaseT autosensing
Power supply:   12-24V DC (approx. 100mA@24V)
Galvanic isolation:   Digital outputs - network: min. 1000 V
  Digital inputs - network: min. 2000 V
  Digital inputs - outputs: min. 1000 V
Connections:   2 x 16x screw terminal blocks for IOs and power
1 x RJ45 for network
1 x DB9 plug for RS232
Displays:   Status LEDs for network
  12 LEDs for digital status

Data transmission:

Protocols:   TCP and UDP sockets, client and server
  SNMP including traps
SMTP e-mail sending
  OPC server
  Modbus TCP
  Inventory keeping, group management
Response times:   Data and switching traffic: typically 12 ms

Housing and other data:

Housing:   Plastic housing for top hat rail installation
  106.8 x 87.8 x 62.6 (L x W x H)
Enclosure rating:   IP20
Weight:   approx. 250 g
Storage temperature:   -25°C - 70°C
Operating temperature:   0°C - 60°C
Permissible relative humidity:   5..95% RH (non-condensing)
MTBF:   245,100 h @25°C per MIL-HDBK-217
Scope of delivery:  

1 x Web-IO 12xDigital,
1 x Quick Guide
1 x W&T product CD
Power supply and other accessories can be
ordered separately