Passive relocking function. A safe with a passive relocking function can detect when someone attempts to tamper with it and then engage extra internal bolts that will fall in place to ensure that the safe can't be compromised.

A safe that has the capability to detect when someone attempts to tamper with it, and upon detection engages extra internal bolts to ensure that it cannot be compromised, has a(n)_______________________. - Thermal relocking function - Passive relocking function - Active relocking function - Intrustion detection alarm