... door lock, RF card lock, Mortise lock, mifare one card lock, RFID lock, Hotel handle door lock, Smart card lock, Smart card handle lock, Contactless card lock/ inductive card lock/ intelligent card lock, battery type door lock ... .The alarm point of low-voltage is 4.8V.Main Material: steel, brassService Durability: more than 100000 timesLife Time: 10 yearsThe ...