•Material: Aluminium Alloy
•2in1 : 2 unlocking way , key+ fingerprint (can save 30pcs fingeprint )
•3in1 : 3 unlocking way , key+ fingerprint+password (can save 50pcs fingeprint +30pcs password )
•4in1(bluetooth tuya app) : 4 unlocking way , key+ fingerprint+password+tuya app (can save 50pcs fingeprint +30pcs password )
•door thickness: 35-55mm, fit right and left open door
•Power supply: 4pcs LR03 AAA batteries(not included)
•When battery run out, can use key to unlock or use USB cable to charge the lock to unlock
•Applicable door type: wooden door, fire door, plastic door, anti-theft doorthese locks have 3 version , pls choose the version you need , the price is different.