Digital Door lock Smart Phone APP Winmax model H31B

Smart Digital Fingerprint Automatic Door Lock With Master Key   Details Brand Name: Winmax Model: H31B Certification: CE, FCC, RoHS Application: home / apartment / office How to unlock: Bluetooth, fingerprint, card, code, key (WiFi Option app) Material: Zinc alloy Color: silver Size: 270 * 70 * 19mm Voltage: 6V (AAA 8X battery) Battery life: Support 10,000 times lock and unlock. Data storage capacity: 200 fingerprints, 200 cards, 150 passwords. 1 year warranty