The Master Key Storage Lock is designed to hold keys. It opens with a 4 digit combination and can be used as an alternative to hiding keys. There are two models, the wall mount model, shown above, and a model that hangs on the doorknob, similarly to the lockboxes used by realtors. We found two ways of recovering the combination: the "feeler gauge" method and the "visual" method..

The Feeler Gauge Method

The Visual Method

Lockbox Use Precautions

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Recovering the Combination for the
Master Lock Key Storage Lock