NOTE: 1)This switch support both of No Neutral Line required and Neutral Line required,Before you install, please check whether your House wiring has Neutral Line required or No Neutral required. 2)Attention: If your house wiring is Single Live Wire design(No Neutral Line). A capacitance is a must to be connected to both ends of the bulbs for normal work. 3)Built-in RF433 frequency allows for another control via RF remote control switch with encoding 1527(Note:433 RF Remoter is not included in the package,please purchase separately) Specification: Type: 1/2/3 Gang Touch Wi-Fi Switch Material: PC V0 fireproof + tempered glass panel. Rated Voltage: AC90V-260V, 50/60Hz. Load Power:3-300W/gang(Note:If it is used for LED or energy saving bulb,the power load should be less than 100W) RF Frequency: 433MHz. Wi-Fi: 2.4GHz, IEEE 802.11 b/g/n Support by : Android and iOS APP: Tuya /Smart Life Features: Remote Control The user can use a smartphone to remotely control the home electronics remotely anytime, anywhere as long as the phone has 2G / 3G / WIFI network compatible with iOS and Android operating system with Smart Life and Tuya app Voice ControlCompatible with Amazon Alexa (Echo / Dot / Dot / Tap), Google Assistant, IFTTT. Flight ticket counter with Amazon Alexa or Google Home to turn your switch on or off with your voice, No hub required TIMINGThe intelligent timer switch will automatically turn on after setting a timer for this switch, which is essential for daily scheduling, and bring you a comfortable and intelligent lifestyle Tips--App Be sure that you are using 2.4GHz WiFi when connecting with the smart bulb. And WiFi must be detectable status. Many routers have 5 GHz and 2.4 GHz network and your phone will always automatically connect to the 5 GHz network. So, you have to completely turn off your 5 GHz network by going to your router settings (enter the router IP address into your internet browser, usually something like 192.168.1.1), forcing your phone to connect to the 2.4 GHz network. In addition, the router encryption mode must be WPA2-PSK type and the authentication type must be AES The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Jooms policies and EU Product Safety and Compliance laws.