The main advantages of Our L6 series switch as follow: 1. No need Gateway. All switch has build in WIFI module, remote controller local control and app local control and remote control via 2/3/4G network and WIFI internet. 2. Unique group function. You can divide devices in different kinds or rooms. Turn on/off all the devices in group by one button. 3. Unique scene function. For example, all off scene when you away home, you can press it to turn off all devices. 4. Complete smart home system include: light, curtain, fan, dimmer, socket, AC, TV control, monitoring system. (Refer complete range of our smart switches) 5. Auto shutdown function: You can set the switch to turn off light at fixed time, for example 5 min, if you forget to turn off the light of garage or bathroom, it will turn off automatically to save energy. 6. Push notification: If you active this function on switch, when the light be turned on, the switch will push notification to your mobile phone, then you can know whether your kids back home or not.. 7. Unique dip switch function. One 3 gang switch can be changed into 1/ 2 Gang and Curtain switch, also can change the LED color of Button. 8. Unique voice control function. You can control the switches just by your voice with mobile phone. (compatible with amazon Alexa and G.Home) 9. Mutual-control function,One switch can control other. For example, open the light downstairs and shutdown it upstairs without any additional wiring. (You need two different switches one connected to light circuit another required only input connection, No light connection Required in mutual switch)