This smart handle door lock supports fingerprint passcode app Bluetooth and mechanical key unlocks it features a reversible handle design fits 35-55mm door thickness and works with wooden brass stainless steel and steel doors powered by 4 AAA batteries it offers silent mode and pairs with Tuya for smart home control suitable for indoor use with FCC certification. | Luckbyte | | Smart Handle Lock Fingerprint App Passcode Keypad Door Lock | Black | Best Buy