Instruction:Unlock: TT Lock APP/RFID Smart Card / Password/ Mechanical keyColor: Silver/BlackBattery Type: AAA BatteryBattery Replacement: ReplaceableMaterials: 304 Stainless Steel + Aluminum + PlasticWaterproof Grade: IP44Automatic Lock: YesAdjustable Door Lock Time: YesLow Battery Reminder Function: YesWorking Temperature: -30-60 degreeThe lock is not waterproofPlease protect the lock no water into the lockSize OptionsStandard: European Standard 40/40More size avaliable:30/30mm 35/35mm60/40mm 75/40mmAdjustable Lock CylinderThe outside handle can be adjustable freelycan be adjusted to the maximum length of 20mm1.Mobile Phone AccessSupported by TT lock AppTT lock App is an smart lock app, its multiple functions always satisfy your requirementsSend temproary passcode/ekey remotelyManage passcode, ekeyView access logsOpen the lock by app remotely or nearly.Passage mode settingTime attendence ..etc.2. Remote control AccessSupport Wi-Fi router to unlock the door and change admin pass code remotelypls note: gateway is not included, pls order it individually.3. Access by Password, RFID Card or keyScramble PasscodeAryclic Touch KeypadPassword support 4-8 digitalsSupport the Anti-Peeping Virtual Password enter, Input the random passcode before or after the correct password, This makes your door much secured.Smart Card Reader:support 150 cardsItem default with 3pcs, if you need more, please click the picture below.Mechanical Key UnlockMechanical key & External power supply interface as spare in case the batteries is dead4 Long Life Battery CaringThe Smart lock is an advanced smart lock offering Airbnb integration and high-tech automated features. The automatic lock feature can adjust the time for the ultimate security setting. The long life battery ensures the