... is optional Detailed Description:Product Name: WATCHDOG D1616F Biometric fingerprint Lock Color: Champagne Golden, Coffee, Vivid Black and ... doors and burglarproof doorUnlock Methods:by Mifare-1 card, Fingerprint, Password, Remote Control, long-distance Phone/Mobile, ... °C~55°CMoisture: ≤93%MTBF: ≥25000H Functions:1. Fingerprint recognition, the convenient and exclusive way of unlocking.2. No-keyhole ...