1、APPLICABLE CIRCUIT: Smart light switch is not need for neutral line, more convenient installation(also suitable for neutral line installation), only compatible with 2.4GHz WiFi, only applicable to unipolar circuit 2、REMOTE CONTROL: The smart light switch can be controlled remotely through the for Smart Life APP; Whether you're on a business trip or a vacation, you can turn on or off the lights in your home via an app. Support RF433 remote control(not included), ON or OFF relay status is the last state remembered when shutdown 3、VOICE CONTROL: This WiFi wall touch switch is perfectly compatible with for Google Assistant, and the simple voice control allow you to free your hands as you walk through the kitchen door with a full load of groceries in hand, sleep on a comfortable bed, a child in your arms, and more. No hub or subscription required 4、SCHEDULING AND DEVICE SHARING: Turn on your smart life with smart switches that you can automatically schedule according to your work schedule and life habits, reducing unnecessary energy waste. Of course, you can also share control of the device with your family 5、WIDE RANGE OF APPLICATIONS: WiFi smart switches are compatible with almost any type of incandescent, fluorescent or LED bulbs. Suitable for residential or commercial applications such as homes, offices, commercial buildings, airports, schools, public restrooms, hospitals and hotels