LinkNode R4 Wireless 4-Channel Relay Controller Board Compatible with Arduino IDE and Android Application

LinkNode R4 is a WiFi relay controller and it is powered by ESP-12f ESP8266 WiFi module which is comptiable with A-rduino 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:
1) ESP-12f ESP8266 WiFi module
2) 4 Channel relays, supporting:
– 277V AC, 10A
– 125V AC, 12A
3) 7-15V DC power
4) Two work modes:
– Program via UART
– Boot from flash
5) Four indiator LEDs

More details about this board and know how to use it with Android from this (Tutorial)

Package Includes:
1 x LinkNode R4 Wireless 4-Channel Relay Controller