Johnson Controls Penn Low Pressure Controller, P170 Series, 120-240 VAC, 1 Phase, 1/4 in Nominal, External Flare Connector Connection, SPST Open Low Switching Action, 20 inHg to 100 lb/sq-in, 7 to 50 lb/sq-in Maximum Differential, 325 lbf/sq-in Maximum Overpressure, 100 lbf/sq-in Maximum Working, Universal-Mounting Bracket Mounting, Steel, 2-1/4 in L x 4 in W x 4-1/16 in H