280X Fingerprint Door Knob, Smart Door Knob with APP Control

A 3-IN-1 Unlock Ways: IRONZON Smart door lock built with 3 unlock way, including fingerprint unlock, App control(works with Tuya App), emergency back-up keys unlock to meet your diversity needs. This biometric door lock is not only a great fingerprint door lock for bedroom, but is also suitable for living room, closet room, office, apartment Smart App Control: The keyless entry door knob offers a free app that allows you can add fingerprints, check unlock records, manage users, and adjust the volume. Note: Control within Bluetooth Range. While door knob offline, please re-wake door knob with fingerprint first and reconnect it Convenient Keyless Entry: Smart thumbprint door lock recognizes your fingerprint in just 0.1s, and can store up to 50pcs fingerprints to share with your family, allowing to enter your home without mechanical keys. When batteries runs out, you can use the power bank to charge the lock for a short time and unlock it. After unlocking successfully, replace batteries