Your Finger is Your Key Instant recognition in 0.3 seconds, just one touch to unlock the fingerprint door lock. Store up to 100 fingerprints. Anti-peep Keypad Add random digits before or after the correct passcode to protect your passcode from the prying eyes. Share Access Code Grant access to your home for the people you trust. Give temporary access codes or set a unique access schedule. Access From Anywhere Add NGTeco WiFi Bridge(Sold Separately) allows you to unlock digital door lock from anywhere and voice control via Alexa or Google Assistant. Protect Your Privacy Smart lever stores your data locally rather than in the cloud to keep your personal information safe and private. MicroUSB For Backup Power Use a portable charger to activate the keypad door lock with handle even when the batteries are dead. Reversible Handle Design Door handle is reversible for both left and right handed doors and has an intuitive, ergonomic design. No Drilling Required Directly replace the existing lever or knob of a single-hole door. Fit standard doors with thicknesses from 1.18" to 2.36" (30 to 60mm). How to add the Smart Bluetooth Gateway? (Sold Separately) Step 1. Download the NGTeco Home App 1. Scan the QR code to download the App. 2. Open the App, register the details and sign in to the account. Step 2. Add the Smart WiFi Gateway 1. Plug the Gateway into the outlet with the provided Power Adapter. Wait for a few seconds until the Red LED blinks quickly. 2. Open the App. Tap the "+" button on the top right corner of the interface, and then select "Smart Door Lock/Wireless Gateway(BLE)" category. 3. Follow the on-screen instructions to connect the Gateway to 2.4GHz Wi-Fi network and complete the setup. Note: The default pairing mode is EZ Mode. If the Red LED blinks slowly, press and hold the Reset button for 5 seconds to make the Red LED blink rapidly. Paired with the gateway, you can remotely unlock the wifi door lock, set and share eKeys, check real-time log history and receive notifications anytime, from anywhere, all through the NGTeco Home App. Also works with Alexa and Google Assistant for voice control.