... .Prevent IR Choice : M:Camera Hotshoe Flash,X line Flash, Hand Flash,Wireless control Flash. ... Continous-flash function,Camera Hotshoe Flash,IR Flash,X line Flash, Hand Flash,Wireless control Flash. ... S4:Continous-flashfunction,Camera Hotshoe Flash,IR Flash, X line Fash, Hand Flash, Wireless control Flash. ... stop and buzzing.Modelling light(in the middle of LED)willl light. The light will be stand by. ...