The moisture meter can quickly measure the moisture content of the grain. 1. 10 sets of fingerprints, padlock supports up to 10 fingerprint records (supports two administrator fingerprints). 2. USB rechargeable battery, built-in 110mah lithium battery, charge for 2 hours, standby for 6 months, can be opened up to 1000 times after full charge 3. Made of zinc alloy body, with excellent strength. With LED indicator light, with 3 color indicator lights representing different states. 4. In an emergency, it can be unlocked directly with your fingerprint while charging. 5. Keyless fingerprint lock allows you to get rid of problems related to losing your keys or forgetting your password, because your fingerprint is your password. 6. ! Specification: Item Type: Fingerprint Lock Material: Zinc alloy Unlocking Method: Fingerprint Unlocking Fingerprint Capacity: 10 Pieces Charging time: 1-2 hours Charging Interface: Micro USB Full power unlock times: 1000 times Maximum standby time: 6 months Power supply: 3,7V 110mAh lithium battery (supplied with built-in battery) Input Voltage: DC5V 200mA Operating temperature:-20-70 List of packages: 1 x Fingerprint Padlock 1 x USB data cable 1 x Manual