A key switch (sometimes called a keyswitch or lock switch) is a key-operated switch. Key switches are used in situations where access needs to be restricted to the switch's functions. Key switches are available as

components Circuit Component may refer to: •Are devices that perform functions when they are connected in a circuit. In engineering, science, and technology Generic systems * System components, an entity with discrete structure, such as an assem ...

with solder connections, and are available with a variety of ampere ratings. They may use tubular or other specially-shaped keys for extra security. Key switches have been used for a variety of purposes, up to and including the launch of nuclear missiles. In less secure applications such as corridor and restroom lighting controls in public buildings,

tamper-resistant switch Vandal-resistant switches (also referred to as vandal-proof switches) are electrical switches designed to be installed in a location (or device) and application where they may be subject to abuse and attempts to damage them, as in the case of ped ...

es with a simpler key mechanism may be used instead.

References

Switches Locksmithing {{Electronics-stub