Omega Engineering Pushbutton Switches Power supplies for stepper drives, sensors, transducers, strain gages, and general purpose use. Linear regulated and switching supplies, adjustable voltages and fixed voltages. Selector Switches 2-Way, 3 or 4-Way Heavy-Duty/Oil Tight Switches 22mm Indicating Lights, NEMA4/4x/13 IP66, Wash Down Environments Heavy-Duty 30.5mm Metal Push Buttons, Contact Blocks/Legend Plate Non-illuminated Heavy Duty/Oil Tight Push Buttons & Enclosures 30mm Rugged Push Buttons, Contact Blocks & Legend Plates 22 mm Illuminated Pushbuttons and E-Stops, Mushroom, Push-Pull 22.5 mm Heavy-Duty Push Buttons, Contact Blocks, & Legend Plates 22 mm Emergency Stop Push Buttons, NEMA 4/4X/13 Ratings