... weight,High efficiency; 3.100% full-load burning test; switching power supply -----Manufacturer in Liushi for 8years, ISO 9001:2008 certified ... is removed 4.ENVIRONMENT Working Temp., Humidity -10°C~+60°C;20%~90 %RH Storage Temp., Humidity -20°C ... 95 %RH Vibration 10~500Hz,2G 10min./1cycl, period for 60 min, each along X, Y, Z, axes 5. ... ,Rise,Hold Time200ms,100ms,30ms at full load switching power supply