This project is a timer that allows the user to add and subtract time to the system using two push buttons and then sounds an alarm when the time elapses. The system has a backup power supply in case the DC power is disconnected and a master switch that allows power to be supplied to the system. This project uses an Arduino to read inputs, count, display the time and sound the tone. It also uses a custom PCB which connects the Arduino to the inputs and outputs. Some accomplishments we achieved while designing this project was creating a working PCB since it was our first time working with PCBs and PCB design software. We also were able to implement a backup power supply so that the system can transition to battery power in the event it was disconnected from DC power.