Cheap And Discounts SDM120-Modbus,1 phase 2 wire, 0.25~5(45)A , 230V, RS485 Modbus, kwh,kvarh,U,I,P,Q,PF,Hz,dmd Measurement, DIN rail energy meter Wholesale. Buy Directly From Merchant Eastron Electronic World. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.