Isolated led drive power supply, 18W, 420mA, 7 years' experience, manufacturer supply with most competitive price. Model:BR-T8 (Isolated)Power:18wThe outputDC 30 ... *H)mm228*17.3*10.5Current modeconstant currentProtection functionpower supply won't be damaged when short circuit, and it ... wil be recovery by itself.For light source(3528) 12 in series and 24 in parallel Isolated LED drive power supply