Product information: Specifications: T8 Black, T8 gun color, T8 silver, T8 gold Unlocking Method: Fingerprint, password, app, key Operating temperature:-20°C to 60°C Applicable door thickness: 30 ~ 55MM (if it exceeds the requirements) Applicable door type: Wooden door, blister door, etc. Fingerprint type: Semiconductor Fingerprint capacity: 50 Main material: Zinc alloy Lock cylinder level: C- level lock cylinder Power supply: 4 1.5 V7 batteries