5-way opening Mifare CardPasswordFingerprintMechanical keyBluetooth Voice promptAll settings can be finished via voice prompt without refering boring user manual. Privacy passwordRandoms numbers can be added in frount and behind the right password.(i.e. 324+123456+97 (123456 is password).) Passage ModeSet and switch passage mode and private mode with one button. Non-disturbance ModeSet and switch open and end right with one button. Security model:The keypad will be locked automatically when Emergency9V battery supplies ousideMechanical key can open outsideReset system outside to solve abnormal. DoorbellMaster knows guests outside conveniently.