... this unique structure grants a better cooling effect. 3. IP Rate: IP65 4. DC 12V low voltage input,reliable ... 5. Adopt series-parallel connection circuit, 20 Pcs for 1 string, each module could be singled outElectrical Parameter & working condition: ... system advertising signs, LED fluorescent tube, LED can light, LED PAR lamps, LED spotlights, LED ceiling lamp, LED panel lights, and LED Light Bulbs.L- ...