ProductName:MI-300d Colours:Silver,Red EntrySystem: DigitalKey,PINnumber BatteryType: 4x1.5VAAsizeAlkaline BatteryLife: approx12-16months TempConditions: -20to50degreecel Doorsize:40-50mm FrontBody: 66(w)x159(h)x34(d)mm MainBody: 154(w)x93(h)x37(d)mm MMI-300DEnjoytheluxuriesofasafeandconvienientlifestyleforyourhome office. Stylishdesign(2coloursred silver) 2wayentry(digitalkeyorPINCode) Onetouchetiquettebutton(silentatnight) Lowbatterywarning(lightflasheswhenbatteryislow) Keypadbacklightfeature(sonumberscanbeseenatnight) Upto8differentcodesatonce(differentfamilymembersor employees) Keypadbacklightfeature(sonumberscanbeseenatnight) InternalAlarmfeature(whenPINisincorrect5timesorifdooris notshutproperly) AutomaticLockfeature(Thisfeatureallowsthedoortolock automaticallywhendooridclosed) Open/closebuttonfeature Lostkeydeactivationfeature AntiHackingSystem Firesafetyfeature DeadLockfeature(Internalalarmwhenthereisafire+special featureallowsdoortoopenduringfire)aterial:AluminiumAlloy