Dwyer F7-LL vertical level switch is a general-purpose device capable of measuring temperatures ranging from -4 to 257°F (-20 to 125°C). It has an enclosure rating of general purpose and electrical connections of 22 AWG, 11.811" (300mm) long. This switch is compatible with liquids and can be mounted vertically or horizontally, depending on the model. It has an SPST hermetically sealed reed switch that is reversible for NO or NC operation. The wetted materials vary based on the model. The F6-SS and F6-MHS models can withstand pressures of 218 psi (15 bar), while the F6-HPS-11, 21, and 31 models can withstand pressures of 116 psi (8 bar). The switch has different process connection options depending on the model. The electrical rating is 20 VA with a current of 0.17 A @ 120 VAC and 0.08 A @ 240 VAC. The specific gravity varies based on the model, with F6-SS at 0.65, F6-MHS at 0.85, and F6-HPS-11, 21, and 31 at 0.6. The magnet used in the switch is either alnico or ceramic, depending on the model. Wire leads vary in length depending on the model.