The Squid Button is in fact a momentary action push switch with trailing leads that end in female header sockets that will fit over GPIO pins on a Raspberry Pi, Node MCU or Particle Photon. To reduce the chance of accidental short-circuits when using the Button, each Button has a built-in 470Ω resistor that does not affect the switching action when connected to a GPIO input, but does mean that if the switch is accidentally connected across power connections your Raspberry Pi will not come to any harm. Note: Switch lead colors may vary.
Note: This is a NON-LATCHING version of the Squid Button. The non-latching version is a push button. Beware, they look identical!