Overview: This product is a 4 channels universal WiFi wireless smart switch with RF 433MHz module, for your smart home system to remotely and automatically turn on/off home appliances and electronic devices by phone APP. It also can be controlled by RF remote controller indoors. It can connect and control four appliances on APP at the same time, and you can independently turn on/off each of the four gangs. It also supports timing turning on/off the appliances at a specified time, and share to others so that you can control your smart home together with your family. You can also voice control your home appliances by Amazon Alexa, and for Google Home/Nest,IFTTT, and enjoy intelligent life and make your home smarter. Specifications: LEDs: 3 LEDs(indicate working mode, wifi status, relay on/off status respectively) Supports to control different voltage ranges USB port power supply more convenient Board consumption: