■ Unlocking Method:-APP,FP/Card/Password, Remote
■ Features:Doorbell, Featured Display, Voice Prompt
■ FP-200/Card-1000/Password-1000 User Capacity
■ Emergency Power Unlock Feature by USB Power Source
■ Power 4 Nos 1.5V High Power Alkaline batteries
■ Suitable for 8-12MM Door Thickness