Im not 100% sure but I think they are for two different type of camera of Nikon. Any how this wireless reciever is really only good if you want to use your smart phone. Or if you can program code and make a simple app use your computer. to view then take a photo and share.
Try this check out Yongnuo trancievers. If you buy two double tranciever packs (and one extra comparible sync cord. you can set up 3 cameras and use the extra transiever to focus/take the shot. 2 packs cost about 60 bucks or so. Plus they're great for their other purpose of off camera flash.