Best Smart Lock Retrofit

SwitchBot Lock Ultra is the world¡¯s first retrofit smart lock with 3D facial recognition, offering multiple ways to unlock - including app control, voice commands, fingerprint, NFC, and more. It installs in minutes without tools or damage and is compatible with 99% of door locks, making it a great choice for both renters and homeowners. With Matter support, it integrates seamlessly with Alexa, Google Assistant, and Apple HomeKit. A triple battery system and built-in power backup ensure you¡¯re never locked out. Smarter access starts here.