The HS Series humidity switch, designed to control dehumidifying as well as humidifying, has a relative humidity (rh) range from 0 percent to 100 percent. The switch features nine user-defined ...

UNIVERSITY PARK, Pa. — Sometimes friction is good, such as the friction between a road and a car’s tires to prevent the vehicle from skidding. But sometimes friction is bad — if you did not put oil in ...