* Built-in temperature and humidity sensor.
* Calculation of selected physical quantities (dew-point temperature, absolute humidity) – (only P18).
* 2 analog outputs 0/4…20 mA or 0…10 V (P18 option).
* Supply from current loop (P18L).
* Standard d.c. current or d.c. voltage output signal (only P18).
* Storage of measured and calculated maximum and minimum values (only P18).