What will trip the slave cell?
Our built-in slave tripper is sensitive to both visible and infrared flashes of light. Any light flash that it “sees” can trigger it, including the flash from another unit in your setup or a conventional on-camera flash. An infrared remote transmitter will trip the slave cell as well. Although this gives you more options for triggering the lights in your setup, the presence of extraneous triggers must be considered when you are not the only photographer in the area. Other photographers’ flash units, on-camera flashes, or infrared remote controls can inadvertently trip your lights. When you are the only photographer in a specific shooting environment, the built-in slave tripper on each unit eliminates excess wiring in your setup. You can use multiple flash units, and hard-wire just one unit to your camera. Your camera’s sync circuit will fire the hard-wired flash, and the built-in slave cell on each of your other units will fire the remaining units simultaneously. If you are shooting in
