Inquisitor Model 712 RF wireless system offers the ultimate convience and ease of set-up for either academic competition or general classroom use.  Eight player system includes one RF reciever USB interface, 8 RF transmitters, cable, software, and aluminum carrying case.  Sytem is expandable up to (40 players) by adding additionalRF transmitters. 

Add an additional transmitter to your Model 712 wireless system,  (Up to 40 transmitters max.)