Wireless Buzzer System

So I want to make a Wireless Buzzer system that connects to some software I use. the units will contain 2 buzzers in each box. The software reads them buzzers as Keyboard keys, up, down, left, right, space, etc. Id love to make these wireless units if anyone has any ideas. I am new to to this but pick things up fast. I have been usinging Makey Makey’s to do the job but would love a wireless option.

Thanks in advance