• Perfect fit on all Euro profile cylinders
  • Easy DIY installation
  • Share temporary access with others
  • Over 2 years' battery life
  • Two-factor authentification & end-to-end data encryption

Unlock a keyless life with a Bluetooth enabled Bold SX-55 Smart Cylinder Lock designed for easy and safe access control. 100% keyless. Easy to install. Convenient to use by phone or PIN. Safe and easy. Because life's too short to worry about everything to do with keys.