Backup access using directional code on the lock keypad.| 2-piece weather cover for maximum outdoor protection.| Low battery notification & reminder on padlock and in-app.| Comes with easy to replace CR2 battery.| Battery jump allows for temporary access if the battery dies while locked.| Features a 56mm wide metal body for durability.| 9mm diameter shackle offers 51mm vertical clearance and is made of boron alloy, offering maximum resistance to cutting and sawing.| The smartphone/app interface offers speed, ease of use, & greater control with the ability to share access, with keyless convenience.| The locking mechanism features anti-shim technology, offering maximum security.| 1 Year Limited Warranty.