Unlock a keyless life with the Bold SX-43 Keyless Cylinder Smart Door Lock! Compatible with all standard Euro cylinders, this Bluetooth or WiFi enabled smart lock is designed for supreme safety and security, 100% keyless and controllable remotely with the free Bold app, wherever you are. The Bold Smart Lock has been rated with a maximum SKG certification (SKG***), making it the safest smart lock for your home, office or business.The Bold Smart lock range is a completely keyless solution for door management. The SX-43 is suitable for traditional euro cylinders with an indoor size of 36-45mm and an outdoor measurement of 30-45mm, with an easy 5-minute installation.This lock works to provides additional security to your home, office or business, having been certified with the highest possible SKG*** security certification for heavy duty burglary resistance. Bold's servers are also encrypted with the latest software used for online banking, ensuring they're protected from any form of hacki...