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5 WAYS TO UNLOCK 5 in 1 unlock modes APP IC Card Fingerprint Password Keys provide you with the most comprehensive scene unlock mode. The biometric door knob features a high-resolution 500DPI fingerprint sensor which can quickly and accurately identify registered fingerprints. It’s smarter and more secure for bedrooms offices and more. SIMPLE MANAGEMENT OF YOUR LOCK This smart door knob supports up to 120 users of fingerprint 150 users of password and 200 users of IC Card. You can know whether family members are safe at home. The app records the time and date when they use the password. VOICE FUNCTION AND EASY INSTALLATION The smart door knob features a voice function for fingerprint and password recognition as well as other settings. Tap the screen to light up the numbers for easy operation at night. It comes with a 2-3/8″ or 2-3/4″ adjustable latch and is easy to install with just a screwdriver. HIGH WEATHER RESISTANCE This smart door knob works great at -77F to 158F and with a special waterproof technology used inside it can work well in the sun or rainy suitable for all weather in the US. DURABLE AND STYLISH DESIGN The fortified lock structure is well-engineered and built which is a combination of billet metal and hand-made parts. This smart entry door lock’s sleek and unique design provides a rich and warm complement to your door’s style.