Smart Biometric Fingerprint Lock Electronic Keyless Password Security Door Lock

Multiple unlocking methods, fingerprint,  anti-peep virtual password, Bluetooth APP, physical key (including 2pcs). Low battery alarm on for TT Lock app, with emergency power interface and backup key. When the power is critically low or the battery is completely exhausted, you can use the key to open the door, and the micro USB power bank also can be a temporary power supply. 

Product model: M4
Product size: 145*65 mm
Collector: Semiconductor acquisition module
Material: zinc alloy
Function: fingerprint + key
Power supply: 1.5v 4 AAA batteries
Fingerprint capacity: 30 groups
Working temperature: -20° ~55
Recognition speed: 0.5s

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