... Refresh rate indoor led screen 3)Clear video led screen p4 Clear Video P4 Indoor Full Color LED Screen P4 ... 100 scales are available, color temperature is adjustableInput signalRF,S-VIDEO,RGB,RGBTV,YUT,YC,COMPISITIONControl systemSending card+Receiving card+DVI ... Card+PCTV Non-liner card+Muti-funcational card(Optional)+Video processor(Optional)+ Fiber Transmitter(Optional) indoor led screen ...