In home automation, wireless home automation (using Wi-Fi or internet connection to connect electrical appliances in your home) is becoming increasingly popular. Our project focuses on using ESP8266 (a low-cost Wi-Fi microchip) to control a Relay.ESP8266 Wi-Fi Module has been a main figure in the DIY IoT market. There are several flavors of ESP8266 like ESP-01 by AiThinker, Node MCU and so forth but the intention and the job are the same. The code is uploaded to ESP8266 Wi-Fi chip by Arduino.There are several IoT Projects based on ESP8266 Wi-Fi Module but Home Automation i.e. controlling different electrical appliances through Wi-Fi (or Internet) has always been a trending and in demand project.