The ZKTeco AL20DB is a Bluetooth-enabled smart fingerprint door lock featuring a sleek touch keypad, advanced fingerprint recognition, and a German standard mortise. Designed for residential apartments, offices, hotels, and small commercial properties, it supports multiple unlocking methods including fingerprint, PIN code, Bluetooth mobile app, and mechanical key. Equipped with BLE 4.0, the AL20DB can be managed using the ZKBioBL mobile app, allowing users to unlock the door conveniently from their smartphone. Its reversible handle, 30 mm slim profile, and durable zinc alloy construction make it suitable for both left- and right-hand door installations while offering long-lasting security and modern aesthetics. Additional features such as random password protection, low-battery alerts, voice guidance, and 9V emergency backup power ensure reliable everyday operation.

Key Features

• Fingerprint, PIN code, Bluetooth App, and mechanical key unlocking
• Bluetooth Low Energy (BLE 4.0) connectivity
• Compatible with the ZKBioBL mobile application
• German standard mortise (AL20DB model)
• Capacities:
  • 100 fingerprints
  • 100 PIN codes
  • 100 users
• High-performance optical fingerprint sensor
• Touchscreen keypad with anti-peep Random Password function
• Reversible handle for left- and right-opening doors
• Slim 30 mm lock body design
• Durable zinc alloy construction
• Voice-guided programming
• Adjustable volume (High, Low, Silent)
• Lockout mode for enhanced security
• Low-battery and illegal operation alarm
• Emergency 9V battery backup port
• Power supply: 4 × AA alkaline batteries (not included)
• Suitable for door thickness: 30–54 mm
• Dimensions:
  • Front: 73 × 179 × 37 mm
  • Back: 73 × 179 × 27 mm
• Ideal for homes, apartments, offices, and small commercial buildings.