Panasonic FV-WCCS1-W is an adjustable condensation sensor that helps to control condensation and improve indoor air quality. It features a blue LED light that indicates when the fan is on, a condensation sensor that turns the fan on and off automatically, and timer and sensor settings that allow you to customize the operation of the fan. The MPH timer can be set between 0-60 minutes, and the moisture sensitivity can be set at low, average, or high sensitivity. Panasonic FV-WCCS1-W is easy to install and use, and it comes with a two-year limited warranty.