Keep up with the Technology Intelligent door lock for HOME/OFFICE/HOTEL Features: - Fingerprint Unlocking - Card Unlocking - Passcode Unlocking - App/WIFI Unlocking (TUYA APP) - Key (Emergency) - Back-up USB external power supply interface, in case batteries are dead - Reversible freestyle handle (Left or Right) Specification Material: Aluminum Alloy Finish: Black Lock Size: 250*60mm Fingerprint Sensor: Semi-conducting fingerprint reader Lock Latch: 1-Eu standard / 2- American standard / 3- China Standard Batteries: 4x AAA (not included) Fingerprint Capacity: 100 Fingerprints RFID card: 100 Users Applicable door thickness: 35mm - 50mm YOU WILL NEED THE FOLLOWING TOOLS. (Not Included) -Drill -Drill Bit -Star & Flat Screwdriver Advised to have a professional install it. step-by-step manual and a template included in the box. What's in the box 1 x exterior panel 1 x interior panel 1 x lock body 1 x Mounting Accessories (screws) 2 x cards 2 x keys 1 x user manual