SINGLE PHASE MULTI-FUNCTION ELECTRIC METER CASE 
��   Overall dimensions: 160x112x71 
��   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.Module box for wave Carrier communication and recording mircoswitch of opening meter cover and press buttons for programming and display in turn are presented.