It is possible to recover the code to a Sentry safe by contacting the company, providing some basic information, presenting a notified statement of ownership, and paying a fee to the Master Lock Company. The process begins online and takes between 3 to 5 business days to complete.
The basic information includes the model number and serial number of the Sentry safe. One option allows safe owners to maintain all of their information pertaining to the safe online for future needs, explains Master Lock Company. Costs of receiving the code for a Sentry safe range between $10 and $30, as of 2015.