Dwyer F7-ST713-20 is a horizontal/specialty level switch designed for use with compatible liquids. It has a temperature range of -4 to 257°F (-20 to 125°C), an enclosure rating of general purpose, and 22 AWG electrical connections. It can be mounted vertically or horizontally depending on the model, and has a pressure limit of 218 psi (15 bar). The switch type is SPST hermetically sealed reed switch, with a specific gravity ranging from 0.6 to 0.85 depending on the model. It comes with wire leads of varying lengths depending on the model.