... in1980 B.CE,ROHS,SGS,UL,KEMA,VDE,TSE,CB C.ISO9001,14001 D.manufacturer E. 430 employees,15000 ... making external case,and PPO plastic material is used for base; Not suffer deformity under long-term use at ... The Voltage of the main power supply.The meter used shall be keep cleaning. The user shall be made ... aware that, if the meter is used in a manner not specified by the manufacturer, the ...