This is a custom made controller for Quietaire Evaporative Air Conditioners
It CANNOT be replaced by a standard MSC1200 - it will not fit properly.
Please contact Quietaire Australia to purchase this as a spare part - they will go out of their way to get your unit working again.
Their contact details are:
Phone: (07) 3442 0888
Email: paulgodwin@quietaireaustralia.com
Website: http://www.quietaireaustralia.com