🔒 Best Retrofit Smart Lock
SwitchBot Smart Lock Pro
Keyless security with effortless smart access
Keyless fingerprint smart lock with auto-lock, remote access via app, and voice control.
Why we picked it: This retrofit smart lock installs in minutes, adds fingerprint and app unlocking, and integrates seamlessly with Alexa and Google for hands‑free control.
- Fingerprint + PIN + smartphone unlocking
- Auto-locks when you leave (geofencing)
- Works with Alexa/Google/Siri
- No need to replace entire door lock (retrofit design)
- Military-grade encryption for security