fail-secure (notcomparable)

1. Of a device: such that, if itfails, it does so in a way that will cause little or noharm to other devices and personnel.

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.

• fail-safe

• luciferase

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