These hinged momentary step switches are evocative of the 16-step sequencer keys on TR-808 sythesizers. Also sometimes used on A/V equipment, they're very tactile, with a good clicky feel. And of course, the built in red LED is great for indicating when something is on or off - or as visual feedback when clicked.There's four legs to the switch for mechanical stability. The switch is momentary SPDT type, there are two pins of the four that act as the common, and they naturally connect to one or the other of the...