Hei Liang HL Knob-4 Smart Door Lock

Color: Black

Type: Smart Door Lock

Features: 4 Easy Unlock Ways: This sleek smart door handle features 4 convenient ways to unlock: fingerprint, passcode, app control, and emergency key. Fingerprint recognition takes just 0.3 seconds, so you never have to worry about losing or forgetting keys again. Entry is faster, simpler, and hassle-free. Smarter & More Secure: Our smart lock uses biometric fingerprint technology and app connectivity for total control. With fingerprint and passcode dual security, you can manage users, check unlock history, set auto-lock, adjust entry modes, and activate security locks right from your phone. Your home stays protected at all times. Classic Look, Modern Strength: Designed with a timeless, classic handle style, this lock combines traditional looks with smart features including fingerprint access, passcode entry, and app control. It's perfect for keeping bedrooms, offices, apartments, and hotel rooms private and secure. Super Easy Installation: Install this smart door handle in minutes with just a screwdriver—no professional needed. It fits most standard US doors. Just follow the “UP” marks to align the interior and exterior handles, keep the spindle vertical, and lock everything into place easily. Important Notes: Fits doors 30-55mm thick, including wood doors, fire doors, and security doors. The lock shows real-time battery level and alerts you when power is low. Do not use while charging; the built-in battery is not removable.