 On/off key switch | |
| Working principle | Switch |
|---|---|
| Electronic symbol | |
.svg) | |
Akey switch (sometimes called a keyswitch or lock switch) is akey-operatedswitch.[1] Key switches are used in situations where access to the switch's functions needs to be restricted.[2][3]
Key switches are available ascomponents with solder connections, and are available with a variety ofampere ratings. They may use tubular or other specially-shaped keys for extra security.[4]
Key switches have been used for a variety of purposes, up to and including the launch ofnuclear missiles.[5]
In less secure applications such ascorridor and restroom lighting controls in public buildings,tamper-resistant switches with a simpler key mechanism may be used instead.[6][7]
 | This electronics-related article is astub. You can help Wikipedia byadding missing information. |
