A key switch (sometimes called a lock switch to distinguish it from a keyswitch) is a switch that can be activated only by the use of a key. They are usually used in situations where access needs to be restricted to the switch's functions.
Key switches have been used for a variety of purposes, up to and including the launch of nuclear missiles.
|Wikimedia Commons has media related to Key switches.|
- "Key switches". Maplin Electronics. Retrieved 23 August 2014.
- "Simulation of a Peacekeeper missile launch". Defence Imagery. Retrieved 23 August 2014.
- "Low-Cost Security Measures for School Facilities" (PDF). National Clearinghouse for Educational Facilities. Retrieved 1 September 2014.
- "Product Bulletin for 30 Amp AC Toggle Switches". Leviton. Retrieved 1 September 2014.