SINGLE PHASE MULTI-FUNCTION ELECTRIC METER CASE 
��   Overall dimensions: 160x112x58 
��   Mount dimensions: 100x140(150) 
��   Electric current: 5(30)A with 1-4 pairs of accessorial terminals 10(60)A with 1-4 pairs of accessorial terminals  20(100)A with 1-4 pairs of accessorial terminals
��   Specification: It is national standard in China that controls charge for long   distance.Recording mircoswitch of opening meter cover and press buttons for programming and display in turn are presented.