Support Two-way Control: TUYA mini smart DIY switch could be used for your old 2 way control switch.Especially,you still available to control the old switch manually after isntalled it TUYA Hub Required: Hub/gateway is required for this switch.Confirmed to working with Tuya/Smart Life Hub, eWeLink TUYA Bridge. Also, you can link other Tuya TUYA products with the hub to realize a complete smart home system for your house Hands-free Voice Control:TUYA smart switch supports Amazon Alexa Google Home voice control and Smart Life and Tuya App control on smart phones( TUYA 3.0 hub required) APP Control:Take full control of connected appliances with timers, schedules and countdown with Smart Life and Tuya App;share control with family and friends for added convenience This smart TUYA 3.0 module is designed with TUYA 3.0 protocol specially,compatible with TUYA hub to realize the whole linkage of your house,a really good substitution for unstable Wi-Fi.NO MORE WORRY about no and weak network