Main Function: Measure and LCD display AC Voltage, Current, Active , Energy kWh.Backlight control: the backlight can be turned on or off by short press the keyReset energy: long press the key over 3 seconds until the energy data flash, then release the key, short press the key again to reset the energyData storage: when the off, the energy data and backlight status can be saved1. Voltage: measurement range: AC 50-300V, starting test voltage: 50V , accuracy: +/- 1%2. Current: measurement range: 0-100A , starting test current: 0.02A, accuracy: +/- 1%3. Active : measurement range: 0-30kw, starting test : 0.5w, accuracy: +/- 1%4. Energy: measurent range: 0-1999kwh, over the test range will maintain the data, otherwise you reset it, accuracy: +/- 1%Dimensions: 78 x 34 x 65 mmOperating Temperature: -20-50CDisplay Type: Digital OnlyModel Number: TOGLRFeature: DIN Rail Mounting Energy MeterFrequency: 45-65HzProduct name: Single Phase Electronic KWh Metercolor:As shownMaterial:plasticPackage Contents:1 x AC Din Rail Multifunctional MeterOnly 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.