SwitchBot Smart Lock Ultra - Smart electronic door lock - with app control - white Experience lightning-fast, whisper-quiet unlocking that perfectly matches your daily rhythm, paired with an Ultra design that masterfully combines elegance and functionality. Triple power backup system makes lockouts a thing of the past, while the Ultra ecosystem integrates seamlessly into your smart home - a revolutionary upgrade. Choose freedom with 18 unlocking methods - from advanced facial recognition to classic keys - and secure effortless access for every user and every scenario. Installation: