Quantity   Component name
1 × ESP8266EX With Relay Module Buy on eBay: https://ebay.to/2Ud2CgT
1 × USB to TTL CP2102 Module Buy on eBay: https://ebay.to/3gYm3nE
1 × Breadboard Buy on eBay: https://ebay.to/3dFzqHi
1 × Wires Buy on eBay: https://ebay.to/2XzVOfr