fail-secure
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English[edit]
Adjective[edit]
fail-secure (not comparable)
- Of a device: such that, if it fails, it does so in a way that will cause little or no harm to other devices and personnel.
Usage notes[edit]
The primary use of the term is with regards to security doors and motorized gates. A motor that has "fail-secure" capabilities will, in case of a power outage, be able to be opened by means of a supplied hand crank.