What does a flasher do? What are the advantages of using flasher in SLR cameras?

Flashlight is a device that uses radio signals to make the flash flash \x0d\ Flashlight can make the flash flash off the machine and emit a variety of lights, and the position and quantity of the flash are not limited by the machine body, so it is more flexible and convenient to use \x0d\ Off-machine flash means that the flash does not need to be fixed on the hot shoes of the camera body, and can be placed at any position \x0d\ Flash that supports light flashing can also flash off the machine without the flash, but the flash can. However, when a flasher is used, there is no limitation in this respect. As long as the flasher can flash within the signal range, it is more useful when there is no need for a body flash lamp. X0d \ The flasher can control multiple external flashers at the same time, and multiple flashers can distribute light more flexibly, which is more widely used and has better effect than a single lamp.