Model 4100, Liquid Level Switch, 1″ MNPT External Tank Mounting, SST, SPDT 20VA Pilot Duty, -14.7 to 1000 PSIG, -30°F to 300°F Product notes Float S.G .. 8 Float S.G .. 75 Lead wires are available in different lengths, terminated ends or cable. Consult factory. Relays are available for handling higher loads than allowed. See Accessories section for details. SST units can be made with all wetted parts being SST. 100 VA SPST non-UL reed switches are stocked. Consult factory. 1 “differential units are available