measure the relative humidity and the temperature in two different locations with the help of two humidity sensors th-1. the PLs 1000 uses these values to determine the absolute humidity and the respective dew points. Based on these values and 5 different functions (modes), humidity and temperature switching points can be set. Fans for incoming air and exhaust air can be controlled directly through 4 integrated potential-free relays. typical applications are the measurement of humidity and temperature, automatic ventilation, the drying or humidifying of rooms, manual control of room fans and the setup of a 2-channel temperature and humidity switch. https://elecena.pl/product/18321279/1114630-professional-humidity-switch 2021-05-03 https://elecena.pl/product/18321279/1114630-professional-humidity-switch 2021-07-07 https://elecena.pl/product/18321279/1114630-professional-humidity-switch 2021-11-16 https://elecena.pl/product/18321279/1114630-professional-humidity-switch 2022-05-11 https://elecena.pl/product/18321279/1114630-professional-humidity-switch 2022-08-17 https://elecena.pl/product/18321279/1114630-professional-humidity-switch 2023-04-16 https://elecena.pl/product/18321279/1114630-professional-humidity-switch 2025-01-29