The smart lock supports five unlocking methods: fingerprint, password, key, IC card, Tuya App (Wi-Fi). If you enter the wrong fingerprint or password multiple times, the system will be locked for three minutes. Mechanical keys and emergency power supply (MICRO USB) can be used when the door lock is out of power. IC Card capacity: 100 pieces. Alarm type: Low battery alarm.Emergency power supply: MICRO USB. Door opening direction: Universal left and right. Power supply: 4 x AA batteries (not included). Working temperature: -20 to +50°C. Working humidity: 40% to 85% (No condensation). This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Doors & Door Hardware\Door Locks & Lock Mechanisms". The seller is "vonivoker" and is located in this country: CN. This item can be shipped worldwide.