Read more U-LOCK 198B-U | SMART DOOR LOCKS U-LOCK 198B-U is a part of our smart Door Locks products. It locks up to Five Locks, provides a Keyless Entry with also can be controlled with your Smartphone. This Digital Smart Lock, Lock with Passcode and Fingerprint Door Lock. Easy app Configuration. ESTIMATE SHIPPING: Due to high demand and COVID-19 contingency, delivery can take up to 45 – 60 days to reach your destination.