Bluetooth standard Bluetooth 5.0BLE Supported mobile phone system Android 4.3/IOS7.0 or above Power supply mode 7.4V lithium battery Emergency power supply 5V(Micro USB) Low battery alarm voltage 7.2V Voltage range 4.5~9V Standby current 153 microamps Working current <2A (average) Unlocking time ≈1.5 seconds Wireless key remote control distance 5~15 meters; 15 can be added Keyboard: standard 14 keys (0-9,*# doorbell battery) Number of passwords 250 Networking method WIFI Applicable door type wooden door/security door Applicable door thickness (mm) 45-120mmCard type MIFARE M1 card Number of IC cards: 1,000 Unlocking methods App, password, fingerprint, IC card, mechanical key, wireless key, face recognition Fingerprint head type Semiconductor fingerprint head Fingerprint capacity: 120 pieces (adjusted according to actual model used) False recognition rate (FAR) <0.001% True rejection rate (FRR) <1.0% Working temperature -10~60℃ Working humidity 45~90%RH Storage temperature -30~70℃ Storage humidity 45~90%RH Number of faces: 50 (including local registration and remote registration) Data storage type cloud storage Alarm function: anti-tamper alarm/low battery alarm/multiple input error alarm/door ajar alarm