<p>Push-button Switches, also known as 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. Potential applications of AML Series push-button switches include manual operations, such as control boards and panels in industrial and test equipment, computer mainframes and peripherals, process control, and medical instrumentation. </p> <p>This Honeywell Push Button Switch AML21BBA2AD has full guard bezel option. It has alternate action and its lamp circuit is independent of switch circuit. This Push Button Switch is UL recognized and CSA certified.</p>