1Made of high quality material for durability and stability. 2Your smart life starts at the front door, you are the key. 3There are three ways to unlock: password, brush IC card, App Bluetooth, key. 4The number of unlocks is more than 300,000 times, the service life is 300,000 times, and the fingerprint storage capacity is 120 (piece). 5Suitable for interior doors, wooden doors, apartment doors, rental doors, office doors.Features: Made of high quality material for durability and stability.Your smart life starts at the front door, you are the key.There are three ways to unlock: password, brush IC card, App Bluetooth, key. The number of unlocks is more than 300,000 times, the service life is 300,000 times, and the fingerprint storage capacity is 120 (piece).Suitable for interior doors, wooden doors, apartment doors, rental doors, office doors.Specifications: Condition: Color: Silver Material:Zinc Alloy Card Capacity: 200 APP: TTlock Unlock Mode: password, IC card, App Bluetooth, key Number of Unlocks: > 300000 (times) Working Temperature: -40-60 (C) Working Humidity: 20-90 (%) Service Life: 30 (10,000 times) Applicable Door Thickness: 35-80mm Power Supply: 4 * AA Alkaline Batteries(Excluded) Package List: 1 x Smart Door Lock (inside and outside) 1 x Lock Cylinder 1 x Screw Package 1 x Installation Kit (include two IC cards) 1 x Instruction Manual2 x Key