Yes UNISA does offer Mechatronics.

You have to go back and study mechatronics for that.

inteligent mechatronic system(IMS) elements manufacture and their maintenance?

Nothing can be said about the scope of mechatronics. Every country has its own scope. If you want to know about the scope of mechatronics in your own country you must consult the University that offers mechatronics. Or if you want to get admission in the foreign country then you will have to consult that foreign country University. By the way It has good scope in Pakistan.

I Was also looking for the same answer and came to know one important thing .... the scope in terms of job opportunity completely depends on the country from where you do the masters course in mechatronics ... like i have been admitted in NUS in mechatronics but job opportunity in core mechatronics is very less in Singapore but as you know it is a multi domain program you can find a job in automation industry , automobile industry .

whereas if we consider US the mechatronics core is at a high level which requires hight mechatronics designing