Electronic hygrometer to control an air humidifier.\nThe humidity rate of indoor air should be between 40 and 60 %. Between these two values, the humidity rate is considered ideal for us, but also for animals, plants, furniture, etc.\n\nThe hygrostat automatically switches on and off the air humidifier when a specified humidity rate is attained. This saves energy, and maintains the humidity level as required.\n\n- Range of humidity: 30 % a 90 %\n- Precision: +/- 1 %\n- Commutation: every 2 minutes\n- Max power of air humidifier: 3680 W