SV40 is designed for fast, reliable installation without compromising security. Featuring advanced finger-vein biometric recognition, it delivers accurate, contactless access while reducing common fingerprint installation and calibration issues. With broad door compatibility and a streamlined push-pull structure, SV40 integrates cleanly into most residential setups with minimal modification. Support for multiple unlocking methods—including PIN, NFC, Bluetooth app, and mechanical key—ensures flexibility during installation and everyday use. Built for stability, ease of setup, and long-term reliability, SV40 offers a smart locking solution installers can trust and homeowners can rely on.