... .Good to contral current, it can less than 5%;4.Isolating constant current output.LED driver Parameter: ... (input230V,Io=100%)Voltage regulation(Full load) leq 0.5%Protection functionOverload protection105% - 150% rated power, automatic recoveryOver ... UL60950-1,EN60950-1 standards.EMC standardsAccording with GB9254, EN55022 class A EN61347-2-13:2008 standardsEnvironmentalworking temperature- 20 ° ~ 60 ° ...