... entertainment CE,FDA,ROHS FU-Wireless Remote Control Laser Pen Presenter1,FU brand products,popular in worldwide.2 ... 1.Plug receiver into USB port,then the LED indicator on the receiver will be normallyon.if ... not synchronise with the projector,the LED indicator will be off after 10 seconds, ... For one to one synchrony status,when the LED indicator normally on(about 10 seconds).Please press ...