Reference Voltage: 230V Reference Current: 5(80A) Accuracy Level: 1.0 Rated Frequency: 50-60Hz Constant Pulse: 1600imp/kWh Power Consumption: 2W, 10VA Starting Current: 0.004Ib Operating Temperature: -20-55 Storage Temperature: -25-70 LCD display with backlight This meter measure city power energy ,also can measure negative power energy, like the solar PV and Generator Real-time display of total active energy KWh, positive active energy KWH, negative active energy KWH, temporary active energy KWH voltage, current, active power, power factor, frequency Colour:White Material:plastic Note: Hold the button for 6 seconds to Reset the temporary kWh to 0. The Total kWh can not be Reset. Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * single-phase bidirectional energy 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.