A 12-month warranty is provided by the manufacturer from the date of purchase Modes of access: Fingerprint (can register up to 100 fingerprints) Low-battery indicator: An audio-visual alarm is triggered when the battery level is low External battery backup provision: If the battery is completely drained, there is an option for an external battery backup. It allows the user to replace the existing batteries before they are drained Door Thickness: 12 to 25 mm | Batteries: AAA (3 pcs) | Application: Wooden Swing | Drawer and Cabinet