SwitchBot Lock Ultra Max Smart Lock with Keypad Vision Pro, 3D Face & Palm Vein Recognition Unlocks in 1.1s, Easy Retrofit, No Cylinder Replacement, Up to 9-Month Battery Life, Remote Access & Matter

• Next-generation 3D face and palm vein recognition — Lock Ultra Max upgrades compatible Euro profile cylinders. Unlock via 3D face, palm vein or Auto-Unlock—key-free and touch-free. Whether carrying a child, bags or coming home in rain, look at the lock or extend your hand, even in low light. False acceptance rate: below 0.0001%. If your phone is unavailable or out of power, face and palm vein remain available. Fingerprint, PIN and NFC are also supported.
• Triple power protection for up to 9 months of battery life — Lock Ultra Max features an upgraded rechargeable 4,200mAh main battery and an additional CR123A backup battery for continuous operation. The main battery lasts up to 9 months. When it is being charged or runs out of power, the backup battery automatically takes over to keep the lock operational. Even when both batteries are low, Micro-current Unlocking uses minimal power to provide emergency access.
• Install in minutes without replacing the cylinder or drilling — Lock Ultra Max mounts inside the door over a compatible Euro profile cylinder, so the existing cylinder and original key remain usable. For a first smart lock or an upgrade, its all-metal body, magnetic quick-release mechanism and seamless base provide a close fit. The SwitchBot App guides DIY installation step by step, without drilling or permanently modifying the door.
• Remote App & Smart Home Control — The SwitchBot App shows door and lock status, battery and event history. Set Auto-Lock and create permanent, time-limited or one-time PINs. Bluetooth supports nearby control; remote access and Matter require the included Hub Mini Matter LX and internet. Control via Apple Watch or voice; works with Apple Home, Alexa, Google Assistant and Home Assistant. App guidance, logs and SwitchBot Support assist with setup and troubleshooting.
• UltraDrive Power: unlocks in 1.1 seconds on average — The brushless UltraDrive motor reduces waiting time when you are heading to work, looking after children or have your hands full. Use Quiet Mode when returning home late or while the family is asleep. On a European test lock requiring two full turns, the average of five unlocks in Fast Mode was 1.1 seconds; when locking in Quiet Mode, the noise level was only 53.4 dBA.
• Data security protection with biometrics stored locally — Bank-grade 3D structured light reads three-dimensional facial features to reduce the risk of false recognition from flat photos. Face recognition range: 0.6–0.9m; palm vein recognition range: 8–25cm. All face and palm vein data is encrypted locally with AES-128 and never uploaded to the cloud, providing comprehensive privacy protection and greater peace of mind when using biometric access.

We found an offer. Check our full guide to learn more about this product.