HighlightsEasy DIY Installation - Install in minutes with just a screwdriver-no wiring or professional help needed. Fits most standard doors (thickness 54mm, backsets 60mm/70mm). Includes Bluetooth gateway, 3 backup keys, 4 AA batteries, reset pin, and all mounting accessories for quick setup.5 Smart Unlocking Methods - Unlock via fingerprint, app passcode (gateway required), mechanical key, offline one-time code, or temporary guest code. Manage up to 100 fingerprints/codes in the Treatlife App.