"836 Pressure Controls - General Industrial, Device Style P, High Pressure Definite Purpose Refrigeration Controls, Type 1 Enclosure, No Modifications"
"836T Pressure Controls - Traditional Machine Tool, T - Style Pressure Control. 75 psi. Enclosure Type 1, 4 and 13 Industrial use.. S.P.D.T. , 2 - circuit contact block. No Modifications, No Modifications, X15, Red LED Pilot Light 24V DC"