If you are looking for a simple, low cost solution and don"t need iTTL/ETTL or High Speed Sync, then the JrX System is the perfect way to trigger your off-camera flashes and studio strobes. The JrX Transmitter and Receiver provide extremely reliable basic triggering as well as remote power control of your flashes and strobes. Using the group dials on a JrX Transmitter, you can control the power levels of shoe mount TTL flashes, Alien Bees, White Lightning and Zeus brand strobes. No more walking across the room to adjust your lights! The Transmitter simply attaches to your camera hot-shoe or through the PC Sync port.