48x48mm Capable of taking thermocouple, RTD and mV input each with 14 bits resolution. 3 Alarm functions, each with 17 alarm modes. EEPROM memory (non-volatile). Self diagnosis function. AUTO ZERO and AUTO SPAN calibrating circuits assure accuracy in long-time usage. Rated for between 85V and 265V. Output by relay, SSR or 4-20mA.