Feature:1. 16 bit virtual password, including 6 to 11 correct password can open the door, to prevents others prying.2. Work with Tuya APP, convenient and more intelligent.3. Priority use fingerprint to unlock, faster and better.4. Electronic key, send at any time, after receiving the key, the other party can also use phone to open the door.5. Aging password, record can be checked, delete at any time.6. Encrypt I-C card, prevents malicious copy.Specification:Material: zinc alloyUnlock way: for Tuya App, Fingerprint, card, code and keysCompatible with Home, for TuyaBattery: 4 * AA (not included)Item size:Stock lock: 156 * 59 * 35mm / 6.1 * 2.3 * 1.4inWithin lock: 133 * 100 * 22mm / 5.2 * 3.9 * 0.9inItem weight: 1550g / 3.4lb.Package List:1 * Outer Panel1 * Inner Panel1 * Lock1 * Install Accessories Package1 * C Grade Mechanical Key1 * Door Buckle2 * I-C Cards1 * Specification