Other safes are rated by the manufacture according to construction materials, and thickness. This type of relocker locks the lock independent of the safe combination. Quality Safe Manufactures also add additional relockers to increase the time required for penetration. These type of relockers lock the Safe independent of the lock, and include devices such as loaded springs, glass, and thermal links. In the case of a Glass relocker the glass is positioned between the lock body and the door, any attempt to drill through to the lock will break the glass and set the relocker.
Thermal links melt under the heat of a torch and set the relocker.
In over 90 percent of the literature read you will find a reference that the safe includes a relocker, but the only relocker found is the one provided by the lock manufacture. This manufacturer should have stated that the Lock has a relocker. Interesting how by leaving out a couple of words they take credit for a relocker that was included by the lock manufacture, not the safe manufacture. Leaving out a couple of words also leaves the uneducated to believe that there safe is superior. Inferior locks do not include a built in relocker.