ZKTeco ML100 smart door lock in black with an aluminium-alloy housing. Unlock using a fingerprint, passcode, IC card, NFC or the ZSmart app. Connects to 2.4GHz Wi-Fi for app-based remote unlocking, temporary passwords and access records. Supports up to 300 credentials: 100 fingerprints, 100 passcodes and 100 IC cards. Designed for 35-60mm-thick doors with a European-standard 5050 mortise; confirm door and cutout compatibility before installation. Powered by 4 AA alkaline batteries (not included), with a Micro-USB emergency power port.