That is exactly why I did not buy the electronic lock models. In the City of Chicago, I had seen businesses using 100 year old safes with mechanical locks that still worked. I looked around my house, not a lot of electronic items over 10 years old. I bought mine with Mechanical locks.I had issues with the electronic lock on my Canon working intermittently.
Canon support was worthless.
I bought a S&G dial on ebay and swapped it out. Easy swap.
I should have kept the smaller Sentry safe that I had before buying this one. Wishing that I had more secure storage for ammo, airguns, etc...