Up to 64+4 Devices —— Connect more devices (up to 64 switches*, sensors, or buttons + 4 cameras or doorbells) to create your home's smart ecosystem. Works with Tapo C420, Tapo C400, Tapo D230, and more

Smart Alarm & Chime —— Works with your smart cameras (Tapo C420, Tapo C400), video doorbells (Tapo D230), and sensors as a smart alarm or chime when motion is detected or a visitor arrives.

Local microSD Storage —— Save recorded videos from your cameras or video doorbells to the hub-installed microSD card (up to 512 GB)

19 Ringtone Options ——Multiple built-in ringtones (up to 90dB) for your customized scenarios

Low-Power Wireless —— Helps your smart sensors and buttons last up to 10 times longer by adopting an ultra-low power wireless protocol**.

Voice Control —— Works with Amazon Alexa and Google Home for hands-free automation. This device only works in the specified Sub-1G band. When connecting it to a device or hub, make sure they work in the same Sub-1G band