Voice Command and Matter Compatibility: With SwitchBot Hub 2 (sold separately), the Smart Lock Pro now supports Matter, enabling iPhone and Siri integration as well as compatibility with Alexa and Google for voice-controlled unlocking. Wide compatibility and easy installation : Retrofittable design with an aluminium alloy body ensures durability and allows for easy installation without DIY. Pro battery life : Powered by 4 x AA 1.5V batteries (included), provides 6-9 months of battery life, which can be extended to 9-12 months with the SwitchBot Dual Power Pack. Remember to replace the batteries when low battery notifications are received. Auto-Lock and Real-Time Notifications : The Auto-Lock function ensures door security and provides real-time notifications via the SwitchBot Hub for door and lock status updates. Part of the SwitchBot ecosystem : Seamlessly integrate Lock Pro with other SwitchBot devices for a unified smart home experience and enable automation of various devices. Pair it with SwitchBot Keypad Touch (sold separately) for up to 15 unlocking methods, including fingerprint, one-time passwords, timed passwords, remote unlock and voice commands.