<p>AML21BBA2AA push button switch from Honeywell features a snap-in panel for mounting purposes and is designed with momentary contact mechanism. It comes with a choice of 1, 2, or 4 poles, along with silver or golden contacts. This push button light switch also has full guard bezel option.</p><p> Honeywell switch buttons are usually made of metal or plastic and are designed to deliver instant response. This particular AML21BBA2AA push button switch is used extensively in mechanical and electronic devices apart from home and commercial appliances. Push button Switches, also known as biased switches, work with the simple principle of electric switch mechanism. They are a type of momentary switch, which needs to be pushed for "on" or "off" function to control some aspect of a machine or a process. </p>