Unlocking method: Sense Time face, fingerprint, password, card swiping, mechanical key, active video intercom, stay capture face recognition
,Super C-level lock cylinder, fingerprint unlock and Built-in doorbell function. WeChat temporary password unlock ,Mobile phone remote unlock ,password protection unlock and  encrypted magnetic card unlock. low voltage alarm, Anti-small black box opening ,Abnormal capture and stay alarm. key unlock ,Tamper alarm and  Visual peephole.