Smart Electronics DC 5V & DC12V ESP8266 WIFI 4-Channel Relay Module IoT Wireless Transmitter
DC 5V & DC12V ESP8266 WIFI 4-Channel Relay Module IoT Wireless Transmitter
ESP8266 WIFI 4-Channel Relay Module is 4 channel WIFI relay module carried a ESP8266 WIFI module and mature 8 bit MCU, with Professional switching power supply circuit.It could control the relay by Android phone APP within the local area network (LAN).It is easy to set .