Lockin Push-Pull Smart Lock S50F

Power supply: 8 x AA batteries (6V DC), Type-C emergency power supply (5V DC) (Only Alkaline, avoid Energizer)
User capacity: 30 x fingerprints, 50 x passwords, 25 x NFC devices
Ergornomic Fingerprint Sensing
Wireless connection:Bluetooth 5.0
Wifi connection (Optional with Xiaomi Gateway / XiaoAi Pro)
Product safety level: B
Lock core safety level: Class C
Door to gate distance must be 70mm or above
Unlock with Facial Recognition, App, Fingerprint, password, mechanical key, NFC 
Home Entry Automation Solution (linkage to home appliances via App)
Big Euro Mortise for superior security
Track unlock record / history via App
Child safety indoor unlock mechanism
Fully Automatic Electronic Mortise (Single action door open)
Switchable between Chinese / English voice prompt