On-Off switch circuit symbol. SPST switches can also work as "push-to-make" on, where when the button is released it returns to its normally open (off) position or vice-versa. Double pole single throw ...

Description: Contact Type = Screw Tripping Characteristics = Type B Application = Residential Circuit Breaker Type = RCBO Special Features = Low Smoke and Fume Paint, RoHS Compliant in Excess of UK ...

[Glen]’s project sounds perfectly straightforward: have a big industrial-style push button act as a one-key USB keyboard. He could have hacked something together in any number of ways ...