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
Product overview:

Web-IO Digital

Control remotely, monitor and send alarms

Current Web-IO 4.0 Digital

Ready for Industry 4.0 and IoT with MQTT and REST

Count pulses and send reports

Relay for switching 230V

Additional products for visualization & networking

Software tools

Older models up to 2016

Remote and time-controlled switching, alarm sending, monitoring and logging