Climates are dynamic, and humidity changes naturally throughout the day and over the seasons of the year. The idea of having just one humidity setting to cover that range is neither possible nor practical. DewStop does control humidity levels, but our Patent Pending technology sets us apart by adapting to your current environment and reacting to changes in humidity and temperature levels in the room, turning the fan On at the right time, and then running the fan until the room is dry. DewStop not only detects RH (relative humidity), it detects dew point, which is the real indication of harmful condensation and moisture. The Que Technology tracks long term changes in temperature and humidity, and returns your room back to normal levels after eliminating excess condensation created by activities such as showering. DewStop is not fooled by daily or seasonal changes in your room's climate, and with the adjustable sensitivity dial, you can set it once and leave it.