... & meters, etc. This series of products is designed according to IEC 950 , UC1950 , UL1012, TUVEN60950,EMC LVD and so on. ... PART 15A, Grade B (b) En55022, CISPR PUB22A, Grade BSafety standard(a)UL1012(b)EN60950(IEC950,UL1950)Working environment temperature-10 ... °CStorage environment humidity-20 ~+85 °CFeatures (HB switch mode power supply)Imported elements, high reliability, built-in filter, low ripple ...