Material: 304# stainless steel Surface Finishing: Electroplated Plate Size: L303 × W43mm Unlock way: Bluetooth App, M1 Card, Passcode, Fingerprint, Wristband or Key App name: TTLock app Support system: IOS7.0 or Android 4.4 or above Power supply: 4pcs AA alkaline batteries Mortise: 85 series double mortise Colour: Black, Silver Working Temperature: -20-60 degree Apply door thickness: 35-55mm USB back up power: Yes Application: Office, Apartment, Home, School Applicable for: Wooden or Metal door
