‎4 A batteries required.

Make sure this fits by entering your model number.
ZINC ALLOY
5-in-1 Smart Door Lock: Fingerprint + APP control +Passcode + Key Fob+ Key. Support Remotely Unlock5-in-1 Smart Door Lock: Fingerprint + APP control +Passcode + Key Fob+ Key. Support Remotely Unlock work with Alexa and smart watch/google home (need a gateway, sold separately). Great smart home devices for front door hotel, apartmenty). Great smart home devices for front door, hotel, apartment