ESP8266 5V WIFI Relay Module TOI APP Control For Smart Home Automation System. Features : Onboard Module:ESP8266 WIFI Module,can connect 5 client at the same time on the mode of AP. Working Method:Mobile phone equipped with Wifi module. Mobile phone and wifi module equipped with one router,and control the relay by APP. Onboard Relay:5V,10A/250V AC 10A/30V DC relay. Package Included: 1Piece ESP8266 5V Relay Module