These series may be used on liquids with high salt or chlorine content but is not
for use in hazardous atmospheres.
They may be also used outdoors but must be protected from weather or splashing
water.
All series WFS flow switches are designed for use only as operating controls. Where
an operating control failure would result in personal injury and/or loss of property, it is the
responsibility of user to add safety devices that protect against, or supervisory systems that
warn of control failure.