Features: 1. This product integrates an advanced fingerprint module into the system. 2. Users need to change and set the fingerprint. It automatically saves data after shutdown. 3. Up to 10 fingerprints can be registered; the first 2 are administrator fingerprints, and the last 8 are user fingerprints. 4. Low-voltage alarm and powered via micro-USB port. 5. Commonly used in file cabinets, swimming pools, saunas, farms, gym lockers, offices, schools, hotels, supermarkets, etc. Specifications: Lock Type: Box Lock Type: Smart Door Lock Product: Semiconductor Fingerprint Lock Item Type: Smart Fingerprint Lock Condition: High quality and brand new Functions: Digital electronic locks Unlocking Method: Fingerprint touch instead of digital Fingerprint Capacity Recorded: 10 Unlocking Method: 10 Lock Body Size: L = 20 mm / 0.8 inches Material: Zinc alloy Size: Approx. 57.5 x 57.5 x 20 mm / 2.3 x 2.3 x 0.8 inches Color: Black Power Supply: 1 x CR2045 3V button battery (not included) Package Contents: 1 * Fingerprint Lock 1 * Installation Kit 1 * User Manual Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.