Security Mechanisms: Often equipped with a dual security system requiring both a digital password and a master key for access.
Emergency Access: Usually includes backup or "override" keys for use if the battery fails or the password is forgotten.
Construction: Typically made of high-durability alloy steel with multiple locking bolts for anti-theft protection.
Protection: Many models are fireproof, designed to keep interior temperatures safe for heat-sensitive items like digital media and paper documents.
Power: Typically requires four AA alkaline batteries to operate the electronic keypad and LCD display