AreaSwitch Style Approvals & Certifications Voltage RatingProcess Connection TypeGenderSet Point - Adjustable or FixedSet Point - IncreasingSet Point - DecreasingSystem Pressure - MaximumProof Pressure - MaximumTemperature - Operating RangeIP RatingsNEMA Ratings Switch Type Process Connection Material Process Connection O-Ring MaterialProcess-Isolating Diaphragm Material Housing Material Current RatingArea Classification - Class, Div. & Zone Rating