HHX-2091 led sign lettersingle led light ,led light source(CE,SDcard,waterproof,RGB),bara lattice led lightsource(patent),single led light sourceTechnical data: Voltage:DC5V Current:60ma Power:0.3w Color:RGB full color View angle:90-180degree available in waterproofFeatures:control system:it is controlled by SD store card,each controller can mostly control 2000 led lamps.