<0.0001%, this smart door handle guarantees accurate access every time. 2. **Convenient Video Call and Voice Intercom**: Stay connected with visitors through the integrated video call feature and voice intercom, allowing you to communicate easily from within your home. This smart door handle enhances your convenience while providing peace of mind. <0.5 seconds, allowing you to enter your home swiftly. Our smart door handle is designed for busy lifestyles, ensuring that security does not compromise efficiency. 4. **Robust Battery Life and Emergency Features**: Equipped with a powerful 4200mAh lithium battery, the Face Recognition Smart Door Lock ensures long-lasting performance. In case of emergencies, it supports a 5V power bank for backup, keeping your home secure at all times. 5. **Versatile Compatibility and Weather Resistance**: For various door types, including wooden, copper, and stainless steel, this smart door handle adapts seamlessly to your existing setup. Additionally, it operates effectively in challenging environments, withstanding temperatures ranging from -30 to 60°C and humidity levels up to 80%., Manufacturer: LLOOPK