LimoStudio Photostudio Photography 4-Channel Radio Remote Trigger w/ 2 Receiver for Studio Strobe Flash Light, AGG1310 Wireless trigger for studio strobes, moonlight and flash 4 channels to minimize conflict 1/4 and 1/8 inch plugs for receiver PC sync outlet to accommodate other sync size (1) x 4-Channel Radio Remote Trigger / (2) x Receiver