This Richelock fingerprint door knob combines biometric security with keypad convenience for residential and light commercial use.

Constructed from zinc alloy with a matte black finish, the exterior withstands rain, sun exposure, and temperature fluctuations thanks to its IP65 weatherproof rating. The capacitive fingerprint sensor reads each user’s unique print in under 0.5 seconds, storing up to 50 sets of encrypted data. A backlit numeric keypad offers an alternative entry method via a temporary code or permanent PIN, while the auto-lock feature automatically deadbolts the door after a preset delay (selectable between 10–99 seconds). Voice navigation guides users through setup and daily operation, making initial configuration straightforward even for those unfamiliar with smart locks. The lock runs on four AA batteries (not included), with a low-battery indicator and emergency micro-USB port on the exterior for backup power. The interior turn knob provides quick manual locking without requiring a key. This model is suitable for wooden doors, metal gates, and standard office doors where keyless entry is desired. The outer assembly is built with reinforced metal guards around the keypad to shield against tampering, and the touch-sensitive panel responds to light presses even with gloves or wet fingers. Installation requires a Phillips screwdriver and a standard door prep (bore hole size 2-1/8 inch, latch bore 1 inch), with mounting screws and templates included. The lock operates in offline mode—no Wi-Fi or Bluetooth hub needed—ensuring reliable performance without network dependency. For multi-user households, each fingerprint and code can be assigned individually, and the master code can be changed at any time. The overall build feels solid and well-balanced, with smooth rotation of the interior knob and no wobble when mounted firmly. While the lock is not designed for high-traffic commercial doors, it holds up well in daily residential use, with the matte coating resisting minor scratches and smudges. The voice prompts can be turned off if silent operation is preferred. At its price point, this door lock delivers core smart features without unnecessary complexity, making it a practical upgrade for those seeking keyless convenience on a budget.