Digital flash triggers work as ordinary slave sensors, which will synchronize immediately with a master flash. All Morris triggers include a 1 year warranty. Our trigger kit is compact and consumes very little power. The active range is 150 feet (50 meters) in unobstructed space. To set your channel, match the dip switches with the transmitter and receiver. The kit contains: one transmitter, one receiver, one 3.5mm Sync adapter and one 12 inch PC Sync cord for a camera without hot shoe.