Finish is epoxy powder coat for enhanced corrosion resistance|Large back box for ample wiring room|Ground screw installed in bodies for ground continuity|Corrosion resistant stainless steel hexagonal head captive screws hold covers to body|Factory sealed enclosure eliminates need for adding sealing fittings and compound at each conduit entrance|Factory sealed pilot lights supplied with jewel/guard assembly and 120 VAC/VDC, 50/60 Hz, 6 W lamp (LED provided as option)|Dozens of possible combinations of push buttons, pilot lights and selector switches|Accurately tapped, tapered hubs for tight rigid joints and ground continuity|Stainless steel pushbutton shaft operates within stainless steel bushing assuring long, maintece free operation|Smooth, rounded integral bushing in each hub protects conductor insulation|Pushbutton and selector switch contacts are silver cadmium oxide which are sealed in lower phenolic chamber isolated from corrosive elements|Assures positive contact and long, trouble free operation|Enclosed stainless steel helper spring prevents accidental operation of pushbutton in severe vibration installations|All momentary push buttons are supplied with lockout type guards as standard|Hole in guard will accept locks with up to 1/4 in hasp|Permits locking of pushbutton to prevent unauthorized operation|Clearly marked terminals with brass screws and spade terminals assure quick, easy wiring