Design, assemble, program and test a safe prototype system to monitor the time that the refrigerated doors are open/closed that meets the requirements of the client brief. To overcome the problem, the client would like: • at least two different indicators to show that the doors are open • a safe system to monitor the time the doors are open • the indicators to become more noticeable the longer the doors are left open. You must follow an appropriate development process and use a microcontroller. You will have a total of 12 hours to complete your prototype system (including testing, documentation and audio-visual recording) which may be split into several shorter periods