Eurotherm historically utilized hardware dongles (often referred to as iKeys or Sentinel keys) that plug into a USB port.
A read-only version that allows monitoring but no parameter changes. No key required. eurotherm itools product key
Eurotherm controllers support Modbus RTU and Modbus TCP. You can use any Modbus scanner (e.g., Simply Modbus, CAS Modbus Scanner) to read/write registers, though you lose the user-friendly parameter names. Searching for "product key generators" or cracks for
If you are evaluating a paid feature, request a 30-day trial license directly from their sales team. They are often willing to oblige for potential customers. CAS Modbus Scanner) to read/write registers
Searching for "product key generators" or cracks for Eurotherm iTools is strongly discouraged for industrial applications.