Specification: Material: Aluminium Alloy Available color: Black, Silver Panel Sizes: H 300(mm)*W70(mm) Unlock modes: APP / Fingerprint / Password / IC card / Key App name: Tuya app, TTlock app Fingerprint read: FPC Sensor (Semiconductor Sensor) Fingerprint Users: 100pcs Card Users: 100pcs Password Users: 100pcs Power supply: 4 x AAA 1.5V batteries Suitable door thickness: 35-50mm Advantages: 1.Convenient APP management system, you can manage your smart lock any where and anytime 2. (Convenient to control),Through APP, you could check the unlocking records, also you can share the temporary code/ekey to visitors, nannies, house keepers, tenants, guests, etc. 3.Multiple unlock modes, access by App, Fingerprint , M1 Card, Password, Wristband or key 4. Support Anti-lock by uplifting the handle outdoor 5. Support indoor elctronic anti-locking function 6. With MicroUSB port for emergency unlock 7. Support anti-peeping virtual password TTLock App Function TTLock App FunctionTT lock App is an popular smart lock app, it with multiple functions, Send temproary passcode/ekey remotely Manage passcode, fingerprint, card, ekey on APP or PC. Open the lock by app remotely Save the unlock records The lock connect with the phone by bluetooth If add a gateway that can connect to Wifi, can delete users, open locks, checking unlock records remotely without distance limitation.(Gateway buy extra) If you do not know how to choise, and if your door is new lock, we suggest you choose our standard configuration! They are used widely. 160X22MM ( For dual latch), 60MM (For single latch)