Image is Representational - See Manufacturer Specs | MICRO SWITCH� Rocker Switches: Power Duty TP Series, Single Pole Double Throw (SPDT) 3 Position (Mom. On - Off - Mom. On), Step-Base Screw Terminal, Flush Panel Mount, Includes Removable Rocker Button, Translucent White Acrylic A rocker switch is based on the back-and-forth action, wherein one end rises while depressing the other. This leads to one side of the switch being on and turning the other side off. The markings used to denote on and off are "1" and "0" respectively. The Honeywell 1TP201-7 rocker switch is used in a wide variety of applications including agricultural machinery, construction equipment, military and commercial aviation, marine applications and medical instrumentation. 1TP201-7 Rocker Switch from Honeywell features a two and three-position push button action. It comes in various button colors. This Honeywell switch is also CE approved and has UL recognition and CSA certification.