Smart Lock for Sliding Door & Windows, 4-in-1 Keyless Entry with Fingerprint, Card, Mechanical Key & App Control, Rechargeable Battery, Compatible

The Narrow Smart Door Lock promises convenience and security with its keyless entry methods — including fingerprint recognition, card access, a mechanical key, and an app for remote control. However, customer experiences reveal significant shortcomings that detract from its appeal. Many users report that after installation, the smart features of the lock, such as fingerprint and app access, often fail to function correctly. Even with attempts at programming and troubleshooting, these features appear unreliable, leading to frustration among purchasers. In some instances, replacements were sent due to malfunctioning locks, but sadly, those too demonstrated similar issues, leaving customers dissatisfied with both the product’s performance and the lack of responsive customer support. While the mechanical key option serves as a fallback, it undermines the purpose of a smart lock. Instructions accompanying the product were also described as incomplete, compounding issues for users attempting to set up the system. Overall, this product has left a trail of disappointed customers who feel that the promises made by the marketing do not match the actual performance. **