Fail-secure

Full definition of fail-secure

Adjective

1. 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

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.

Related terms

• fail-safe

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