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 Thermometer

Measure, store and visualize
climate values and air quality

Temperature, relative humidity, air pressure and air quality measurement

Temperature measurement

Temperature measurement incl. digital relay output

Measuring - Accessories

Additional products for visualization & networking

Software tools - free -