... Event log: Record Max. 5000 events ØSupport RS485, MODBUS communication port. MeasurementØ2 main circuits monitoring Include: U, I, ... monitoring Include: I, P, PF, kWh, DemandTechnical Specification Power supply85~265V AC or 120~ 300VDCMTBF≥50000hService life10 yearsRated ... can connect Max 3 strip PMAC201C. Branch Circuit Power Meter, Multi-channel Branch Feeder Meter, RS485 Communication Power Meter