Manufacturer · Master Lock Company

SentrySafe

America's most popular fire and water resistant safe brand. We open every SentrySafe model — from the small Fire-Safe File Box to the large Big Bolt Fire/Water gun safe.

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About SentrySafe

SentrySafe was founded in 1930 in Rochester, New York, and is now part of Master Lock. The brand specializes in fire-resistant and water-resistant home safes for documents, valuables, firearms, and digital media. SentrySafe is sold widely at home improvement stores nationwide and is one of the most common safes we open in residential service calls. We service combination dial models, electronic keypad models, and biometric fingerprint units across the entire product line.

SentrySafe Series We Service
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Fire-Safe

Fire-rated document and home safes (1/2 to 1 hour ratings). Combination dial and electronic models.

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Fire/Water Safe

UL classified fire AND ETL verified water resistance. Common in flood-prone homes and commercial offices.

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Big Bolt & Gun Safes

Long-gun and pistol safes with reinforced bolt work. Includes electronic and biometric options.

Quick Access & Pistol Safe

Bedside electronic and biometric pistol safes. Common forgotten-code service calls.

Services Available
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Lockout & Emergency Opening

Forgotten combination, dead 9V battery on the keypad, broken handle, or jammed re-locker — non-destructive opening when possible, controlled drilling when not.

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Combination Change

Reset the dial combination on any classic SentrySafe Fire-Safe or change electronic / biometric codes on the keypad models.

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Battery & Keypad Diagnosis

The most common SentrySafe service call: low battery preventing entry, or a failed solenoid behind the keypad. Often resolved on-site in under 20 minutes.

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Lock Replacement

Replace a worn-out keypad assembly or upgrade a basic dial unit to an electronic keypad with backup key.

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Technical Instructions — Staff Only

SentrySafe drill points (each series differs), keypad bypass procedures, code recovery sequences, and the recommended manipulation tools for the dial models.

🔒 Access Tech Instructions
Phone number + 4-digit PIN required