The Micro.wav is an attachable device that adjusts the volume of any microwave and changes what sound it makes. The device allows the user to clip a couple of wire to certain points on the microwave control panel and thereby fix the volume of the microwave’s beep-indicators — and not have to worry about disturbing other members of the house. After replacing the boring beep-sounds, the consumer is able to both personalize a common, everyday appliance and make the sound more pleasing to hear. The device uses an Arduino AudioShield and an SD card to send signals to the higher quality speaker attached. The micro.wav makes sure the user doesn’t have to hesitate before heating up food in the microwave and that they get a pleasant noise reminding them their food is done.