For the control of temperature (-10…+60°C, +14...+140°F, precision ±1 °C) and humidity (1…99% rh, precision ±3% at 35...75%, otherwise ±5%), reversible °C/°F, in living spaces, max.-min.-function, indication of dew point, alarm function in case of risk of mould, detailed instructions with tips for active heating and ventilation and batteries 2 x 1.5 V AA included.