<p> The AML21EBA2AC Honeywell push button switch with DPDT circuitry comes with square pushbutton switch housing. Push button Switches or biased switches work on simple electric switch mechanism. Push button switches are a type of momentary switch in which the user push-for "on" or push-for "off" to control some aspect of a machine or a process. The buttons are usually made of metal or plastic and deliver instant response. </p> <p> This Honeywell AML21EBA2AC push button switch comes with a snap-in panel mount. A push button switch is used in a variety of mechanical and electronic devices including home and commercial appliances.</p>