LinkSprite LinkNode R4: Arduino-compatible WiFi relay controller 4-Channel Relay Module

LinkNode R4 is a WiFi relay controller and it is powered by ESP-12f ESP8266 WiFi module which is comptiable with Arduino programming. There are 4 relay channels and each channel allows you to control high-power devices (up to 10 A) via the on-board relay. LinkNode R4 can be used to remotely turn lights, fans and other devices on/off. The WiFi interface will allow you to associate the board with your existing WiFi network and send the commands over the network. Features ESP-12f ESP8266 WiFi module 4 Channel relays，supporting: 277V AC， 10A 125V AC， 12A 5V DC power Two work modes: Program via UART Boot from flash 4 indiator LEDs