This is a push button switch with an indicator light (I bought the red one) and a premium appearance. As a fan of mechanical keyboards and all things tactile, I love the feel of it when I press it and it also makes a faint but pleasant clicking sound. It has a plug with 5 wires: black and red going to the indicator (which interestingly works well with any voltage in the range 2v to 20v, see photos so you can use it for 5v or in a car) and green with Yellow connected when powered on, or White when powered off. Possible use in a car or motorcycle (although it's barely big enough to be comfortably handled with motorcycle gloves - yes I tested it, see photo but YMMV), or a high quality DIY amplifier. be 5/8" or 16mm.
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