... 5. Adopt series-parallel connection circuit, 20 Pcs for 1 string, each module could be singled outElectrical Parameter & working condition: ... PAR lamps, LED spotlights, LED ceiling lamp, LED panel lights, and LED Light Bulbs.L-STAR Lighting Co., Ltd. ... structural design, optical design, electronic design engineers and other high-quality excellent development team. We also have a pragmatic management, ...