... board, excellent heat dispersing performance ,more reliable low voltage DC power supply, more secure Waterproof design, waterproof grade IP65 Lead ... LED panel light efficiency increased by 20% Disadvantages:drive power is difficult to get,need constant current drive (hard ... recommended using a dedicated high-precision DC DC constant voltage drive EF-DC-2A,EF-DC-8A RX-ALF3528-33 300X600X3.5MM ...