Protocol: 868/922MHz, Wireless Type: 2.4GHz Wi-Fi, Buttons: Slience Button, Adapter Input: 100-240V, AC, 50/60 Hz, Keep sub-devices connected at all times through the robust wireless network, Make connected devices work energy-efficiently, promising longer standby time, Connect with up to 64 smart devices (sensors, smart buttons, TRV) for an immersive smart home experience,Coordinates with Tapo smart sensors to inform you of security issues or other problems, Works as your doorbell, with customized and adjustable ringtones.