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PARAMETERSBrand: NAIERDIColor: BlackMaterial : ABS and zinc alloyLock Size : Please examine following photoFingerprint Capacity: 20Powersupply: three x AAA Batteries ( no longer incorporated )Package includes: 1 set of fingerprint cupboard lock with necessary accessoriesNOTICEPlease allow 1-3mm error because of handbook measurement,please ensure you do not mind earlier than you bid.Super Quick ResponseThe fingerprint lock can respect your fingerprint in just 0.5 second and release immediately!Super Long Standby Time 365 Days3 AAA batteries can last working for approximately 365 days ( please note battery isn't incorporated parcel )Backup Unlock MethodHere is an emergency morse code, in case of not able to release because of cracked palms and other reason. If the battery strength is empty, you may charge it through energy bank.