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

Applications for Web-IO Digital / Industry & data protocols

Potential-free contact triggers SNMP trap

The Web-IO Digital also brings devices into the SNMP management system which have potential-free contacts. Using the Web-IO Digital for example leaks in the server room can be reported early. When water enters the Web-IO Digital immediately issues a warning via SNMP trap.

Potential-free contact triggers SNMP trap.

Simply connect the potential-free contact of a leak sensor to the input of a Web-IO Digital.

To also turn on a warning light, use the Web-IO Digital outputs. Any sensor or device which has a potential-free contact can be connected as the trigger for an alarm. Other types of signals can be switched using relays.

Product Selection



Nominal voltage12V or 24V (switching threshold +8V)

Outputs (optional )

Nominal voltage12V or 24V
(permitted range 6-30V, max. 500 mA)

potential-free contact, max. 48V/5A
using corresponding coupling relays for 230V

  • Web-IO 2xDigital Input, 2x Digital Output2x In, 2x Out
  • Web-IO 12xDigital Input, 12x Relay Output12x In, 6x relays Out
  • Web-IO 12xDigital Input, 12x Relay Output12x In, 12x Out
Product Selection

  • Ethernet portConnect the Web-IOs to a free Ethernet port and provide power
  • In/OutConnect up the inputs and outputs
  • Assign IP addressAssign the Web-IO Digital an IP address
  • ConfigurationConfigure the Web-IO Digital in the browser

More applications:
Scroll examples