Godox Ft-16 Trigger 433Mhz 16 Channels Wireless Remote Flash Trigger kit 1x Transmitter + 3x Receiver for Witstro Ad180 Ad360 Flash Speedlite The trigger set consists of 1 transmitter (on camera) and 3 receiver (on-flash) Remote control lamp and focus lamp, and a buzzer switch Set power ratios of up to 16 groups of remote flashes The wireless power control flash trigger FT-16 is designed for versatile use Support flash:Witkey series flash, Flash AD180 AD360,flash upgrade, flash upgrade version of D upgrade, GT series, GS series of Gemini Gemini(All are available in our amazon site)