Godox FTR-16 Remote Wireless Power Control Ft-16 Receiver for Godox Witstro Ad360 Ad180 Flash Speedlite Remote power adjustment: Each flashgroup can be set to 16 different power levels. Flash grouping: Firing at most 16 group of flashes for creative photography. One-for-Multiple: Flexible combinations of one transmitter and multiple receivers. FTR-16 could match Godox Cells Canon/Nikon trigger(New items,Selling in our store)