Tapo Smart IoT Hub + Doorbell + Alarm | Tapoh100 Smart alarm Smart doorbell Whole home coverage Local smart actions Plug & play set up Low-power wireless Up to 64 devices 19 ringtones Wi-Fi 2.4GHz Warranty: 1 year TP-Link Tapo H100 Smart Iot Hub With Chime | Tapoh100 Features Whole-Home Coverage - Keep sub-devices connected at all times through the robust wireless network. Low-Power Wireless Protocol - Make connected devices work energy-efficiently, promising longer standby time. Tapo Ecology - Connect with up to 64 smart devices (sensors, smart buttons, TRV) for an immersive smart home experience. Smart Alarm - Coordinates with Tapo smart sensors to inform you of security issues or other problems. Smart Doorbell - Works as your doorbell, with customized and adjustable ringtones.