<p> The AML21FBA2AD push button switch from Honeywell has rectangular pushbutton switch housing with 1 lamp circuit and a black bezel. It has solder or quick-connect terminals. 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 AML21FBA2AD Honeywell push button switch has a snap-in panel mount with 2-level alternate action and 2-pole double-throw silver contacts. A push button switch is used in a variety of mechanical and electronic devices including home and commercial appliances. </p>