UNLOCK by: fingerprint, user code, user code + fingerprint, fingerprint + fingerprint, mechanical keys. Double verification mode increase lock security level significantly.
Support up to 100 fingerprints and 100 user defined 4-12 digit Anti-peep codes (you may input any prefixes and suffixes number).
REVERSIBLE HANDLE: This lock fits either left or right handed door; Reversing lever controlled by key; Removable key cylinder lets the user make key copy or re-key without bringing the whole lock.
Outside chassis double-shell heavy duty construction design and weatherproof, fits a USA standard 2-1/8" diameter bore Hole with a thickness of 1-1/4" to 2-1/4" door.
QUALITY : One year manufacturer limited and offer US customer service.
Please search "Kkz3zWrsOLg" on YouTube for product operation video.