Energy Meter. 3 Phase 3 Wire /3 Phase 4 Wire Make:EDMI Serial:217156073 Model:2000-6E20-1A311-152-621-H06-M Accuracy class:0.2S Optical Communication:IEC Flag Modem Communication:RS232 w/1 X RJ45(H.Pow/L.Volt) Extended Comm:RS485(2X RJ45)n RS232 (DB25) Frequency:50 Hz Voltage:57-240V I-n (50-290 V maxlimits) Current:1(4)A CT I/O:"2PIP,8X240 VBFOP(AB,CD,EF,GH) No Ext IO,240 V inputs (+/- 20 %) Aux Option:"100V-250V AC/DC Aux CO,Aux Pri" Battery: Battery connected 2017-04-03 With EziView Software for EDMI Energy meter and Optical Read Head for EDMI Energy meter