Additional sensor for Ventus weather stations W832 and W835. You can expand the measurement capacity of your weather station by placing additional sensors in other locations. Use alongside the main sensor a temperature sensor, for example, on the cooler, shadier side of the house, to get a more accurate overall picture of the outdoor temperature. Suitable for both indoor and outdoor use. You can also get the temperature and relative humidity measurements from the basement, outdoor storage, or other cold spaces. There is no display on the sensor; it transmits data to the weather station. Information cannot be read from the weather service.