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 for solar PV energy metering. The design and din rail installation provides a easy and economical solution for your metering . : plastic Color as shown 1. Measures kWh, Kvarh, KW, Kvar, , PF, Hz, , V, A, etc. 2. Di-directional measurement IMP & EXP 3.Two pulse outputs 4.RS485 Modbus 5.Din rail mounting 6.45A direct connection 7. Class 1 accuracy Specification Nominal Voltage(Un) 230V AC Operational Voltage 176~276V AC Insulation Capabilities AC Voltage Withstand Impulse Voltage Withstand 4KV for minutes 6KV-1.2S waveform Basic Current (Ib) 10A Maximum Rated Current () 100A Operational Current Range 0.4%Ib~ Over Current Withstand 20Imax for 0.01s Operational Frequency Range 50~60Hz Internal Power Consumption 2W/10VA Pulse Output 1000/2000imp/kWh Communication Type RS485 Communication Protocol Modbus RTU Package Contents: 1 x Single Phase 230V Din Rail Meter Only the above package content, other products 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.