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| - | [* black] |
|---|---|
| + | [* black] Let's take a closer look at the ''key'' components of a 2019 butterfly switch: |
| [* black] Key cap | |
| [* black] Butterfly mechanism—physically stabilizes the thin key cap, ensuring that it travels up and down without wobbling or tilting | |
| [* black] Dome cover—frame with a flexible membrane that allows the keypress force through while keeping contaminants out of the contacts | |
| [* black] Metal dome—supplies the spring force for the key while also serving as the electrical switch by deforming and bridging the board contacts | |
| [* black] Board contacts—connecting the central pads with any of the four outer pads signals a keypress | |
| [* black] Silicone sleeve—provides ingress resistance for the butterfly mechanism to prevent it from being physically jammed |