... easy installation 4.applied for billboard, sign, 3 led module 5050: This product adopts four pcs SMD LEDs as ... and closely on the board, in this way, the module could achieve very high intensity. This product could be ... ,etc.parametersymbolconditionRangeunitVoltage of power supplyVDDDirect current12vWorking temperatureTopDC12V,50%RH-20~+80°CWorking humidityBDC12V,25°C98%RHViewing angle281/2120.Basic ...