This report The study was designed and built electric timer. To facilitate the use of electricity in homes. The design of electricity will Keypad timer that can be set at the power supply was cut. The time can be set up six Main or 999,999 minutes, and * button press to work all the time and have the keys to be used quickly by the button A. when pressed, will start as soon as 30 minutes Button B. when pressed for 60 minutes to C. button will start as soon as 90 minutes when the D button press will start running 120 minutes, microcontroller software. processor and LCD display by experimental results. Can conclude that To set the time and the time is set correctly.