If you are looking for a simple solution and don't need iTTL/ETTL or High Speed Sync, then the Jr2 System is the perfect way to trigger your off-camera flashes and studio strobes. The Jr2 Transmitter simply attaches to your camera's hotshoe or PC Sync port. It provides incredibly simple controls that are easy to learn even for a beginner. Control four groups of the off-camera lights for a variation of power outputs, toggle groups on/off easily, and save up to four group and output settings. The Jr2 Transmitter also has a lock function to help prevent making changes unnecessarily. Another great feature the Jr2 Transmitter has is the ability to trigger your camera remotely. You would simply need a shuttle release cable specific to your camera and any additional RadioPopper Transmitter. The Jr2 Transmitter can communicate with any JrX Receiver. Px Receivers have this option when used with a Canon Speedlite.