5-in-1 Unlocking: Choose your preferred unlocking ways: APP +50 fingerprints +50 passwords +50 cards +2 keys. If you connect to a WiFi gateway (Sold Separately), you can also control it remotely. Safety and Security: Made of high-quality material: - and waterproof keypad. Tested to for 100,000 uses. All data is stored locally, with real-time monitoring via the APP to safeguard your home at any time. Easy Installation: Fits 99% of American homes' front or room doors. Swap your old lock in just 10 minutes with a screwdriver-no extra drilling needed. Our outdoor door knob works for both left and right-hand use. Ease of APP: Easily connect and control the smart knob via Bluetooth in just a few minutes. Setting right at your fingertips-no additional fees required. Color: Black Material: Alloy Package Contents: 1 * smart door lock Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.