The author made lamp module using WizFi250. The lamp module is composed of Arduino, WizFi250, Relay Board, and Lamp.
People can use simple TCP/UDP Application from smartphone(iOS or Android) to control the lamp module.
The author didn’t make public the source code. However, it would be of help for people who would like to make wireless lamp module using DIY because the author provided details of schematic diagram in hardware and AT Command of WizFi250.