Fingerprint Door Lock-Smart Door knob, Biometric Door Locks,with App/Code/Backup Key/Fingerprint/IC Card, Smart Door Knob Keyless Entry Door Lock with Handle for Home Hotel Office Apartment Bedroom Black healthJAPAN_March2024 Built-in speaker

Built-in speaker

and then recover it back to M4 using the repair nut

It is very gentle and requires very little to no force

Safe Material: BVN dental wax is made of high-quality wax

And the flat bracket has a smooth surface and burr-free edges

Fingerprint Door Lock-Smart Door knob, Biometric Door Locks,with App/Code/Backup Key/Fingerprint/IC Card, Smart Door Knob Keyless Entry Door Lock with Handle for Home Hotel Office Apartment Bedroom Black healthJAPAN_March2024 Built-in speakerFingerprint Door Lock Smart Door knob, Biometric Door Locks,with App Code Backup Key Fingerprint IC Card, Smart Door Knob Keyless Entry Door Lock with Handle for Home Hotel Office Apartment Bedroom Product Features 5 Multiple Ways To Unlock: These black door knobs have 5 unlocking methods,Fingerprint + Passcode + APP Control+ IC Cards (2 PCS) + Physical Keys (2 PCS). The fingerprint door knob supports to add: 100 fingerprints+100 group passwords+100