The SDM230 energy- are used to measure single-phase like residential, utility and Industrial application. The unit measures and displays various important electrical parameters, and a RS485 communication port for remote reading and monitoring.Bi-directional energy measurement makes the unit a good choice for solar PV energy metering. The compact design and din rail installation provides a easy and economical solution for your metering demand.material: plasticColor as shown1. Measures kWh, Kvarh, KW, Kvar, , PF, Hz, , V, A, etc.2. Di-directional measurement IMP & EXP3.Two outputs4.RS485 Modbus5.Din rail mounting6.45A direct connection7. 1 accuracySpecificationNominal Voltage(Un)230V ACOperational Voltage176~276V ACInsulation CapabilitiesAC Voltage WithstandImpulse Voltage Withstand4KV for minutes6KV-1.2S waveformBasic Current (Ib)10AMaximum Rated Current ()100AOperational Current Range0.4%Ib~Over Current Withstand20Imax for 0.01sOperational Frequency Range50~60HzInternal Power Consumption2W/10VA Output1000/2000imp/kWhCommunication TypeRS485Communication ProtocolModbus RTUPackage Contents:1 x Single Phase 230V Din Rail MeterOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.