Description Type: Smart Door Lock. Model: C200. Opening methods: Fingerprint, password, card (Mifare card), traditional mechanical key, and LifeSmart App. Material: Aluminum alloy with a stainless steel (304 stainless steel) lock body. Security features: Resistant to violent opening, saw-resistant, and resistant to traditional lock-breaking methods. Additional specifications: Storage capacity up to 50 fingerprints, powered by 4 AA batteries. Compatibility: Fits door thicknesses ranging from 40-120 mm. New, unused