The WFS series paddle-type SPDT switches are built for accurate, reliable, and strong performance. They are used in liquid flow lines that carry water or other fluids that do not harm brass or phosphor bronze and are not hazardous.

These switches can open one circuit and close another when the liquid flow goes above or below the set level. They should not be used with liquids below 0°C. They work with liquids containing high salt or chlorine but are not for hazardous environments.

They can be used outdoors but must be protected from weather and splashing water. These switches are meant only for operation control. If failure could cause injury or property loss, users must add safety devices or warning systems.