Web-IO 12x Digital Input, 6x Digital Relay

Web-IO 4.0 Digital, 12xIn, 6xRelay Out

Here begins the world of Industry 4.0
Web-IO Digital is made to handle and monitor processes over Ethernets


Switch, monitor and count ...

With the Web-IO 4.0 Digital switching signals can be controlled, acquired and monitored over TCP/IP Ethernet. Numerous web and network services are available for reporting changes on the inputs and outputs - even directly in a browser. With protocols such as MQTT and REST the Web-IO is an ideal fit in the world of Industry 4.0 and the Internet of Things.

This is the Industry 4.0 future - try it now and be convinced.


Switching signals:

  • 12 switching inputs:
    • Digital 24V inputs
    • 32-bit pulse counter
  • 6 potential-free contacts
    • Switching voltage 12V, 24V, up to max. 48V
           (110V, 230V via coupling relays)
    • Switching current max. 5A


  • Intuitive Web interface for simpler operation
    • Select between German or English
    • Switching the outputs directly from the Web interface
    • Adaptation for smartphone
    • HTTP and HTTPS
  • Current Industry 4.0 protocols:
    • REST and MQTT support
  • Box-to-Box
    • Pass switching signals over the network 1:1
  • Alarm and reporting functions:
    • Email for alarm sending or as status report
    • SNMP polling / alarm traps
    • Switching your outputs in alarm situations
    • Switching the outputs on another Web-IO
    • HTTP requests for controlling third-party devices
    • Up to 12 actions can be configured
  • Dynamic integration into other Web sites:
    • Direct access to current measurement values via HTTP requests. AJAX and JavaScript
  • Additional software interfaces for incorporating into your systems/databases:
    • OPC
    • Modbus TCP
    • Syslog
    • TCP and UDP sockets, client and server
    • FTP (data logging)
  • Internal clock
    • Time synchronization via time server calibration
    • Battery-backed device clock
  • 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 power
    • Screw terminal
    • 12 - 48V DC

Standards & more

  • Conforms to standards both in office and industrial environments:
    • High noise resistance for industrial environments
    • Low noise emission for residential and business areas
  • 5 year guarantee
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Connections, displays and control elements:

Digital outputs:   12 x potential-free contacts max. 48V, 5A
    Using our coupling relays voltages of even up to
230V can be switched
Digital inputs:   12 x digital inputs,
    max. input voltage +/-30V
    protected against reverse connection within this range
    Switching threshold 8V +/- 1V
    "On" current = 2.2 mA
    integrated 32-bit counter
Network:   10/100BaseT autosensing
Power supply:   12-48V DC (ca. 100mA@24V)
Galvanic isolation:   Digital outputs - network: min. 1000 V
    Digital inputs - network: min. 2000 V
    Digital inputs - outputs: min. 1000 V
Adapters:   1 x 16x screw terminal block for IOs
1 x DB9 for RS232 auxiliary port
1 x RJ45 for network
Displays:   Status LEDs for network
    24 LEDs for digital statuses

Data transmission:

Protocols:   HTTP and HTTPS
    TCP and UDP sockets, client and server
    MQTT - Publish and Subscribe
    SNMP including traps
    SMTP e-mail sending
    OPC server
    Modbus TCP
    Inventory keeping, group management
Response times:   Data and switching traffic: typically 20 ms

Housing and other data:

Housing:   Plastic housing for top hat rail installation
    106.8x87.8x62.6 (lxwxh)
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)
Scope of delivery:  

1 x Web-IO 4.0 Digital, 12xIn, 6xRelay Out
1 x Quick Guide
Power supply and other accessories can be
ordered separately






Send messages - when limits are violated or timer-based - for informational purposes directly to the responsible technical as an e-mail or as a reroute via SMS.


After the device has been configured for and connected to your network, the following steps are still necessary.

Open the profile for configuring e-mail alarm messages. e-57606-35-pide-000
Enter the desired parameters. e-57606-36-pide-000
When the limit you have set is exceeded, the device sends an e-mail which can also be transmitted as an SMS message using special functions available from cellular phone service providers. e-57606-37-piww-000