The G518 is a versatile smart lock designed to replace traditional handles and provide secure, keyless entry for doors with a thickness between 35 and 55 mm. Crafted from black aluminum with scratch-resistant materials and rubber-covered edges for waterproofing, this lock blends durability with a clean aesthetic. You can unlock your door using a biometric fingerprint sensor that supports up to nine unique prints with a very low error rate, a digital keypad for passwords, or one of the two included RFID cards. For those who prefer digital management, the lock connects directly to any WiFi router via the Tuya Smart app, allowing you to issue temporary, single-use, or permanent virtual keys to guests. The system keeps you informed through access logs and notifications for low battery levels or break-in attempts, which trigger an anti-theft alarm. It runs on four AAA batteries, though a USB Type-C port is available for emergency power if the batteries run out, alongside a physical mechanical key for complete peace of mind.