Easy-to-use DC power analyser 0 - 60V 0 - 100A for measuring power flow in a low voltage circuit such as the flow - in Watts - and the cumulative rate of flow - in Watt-hours - from a solar panel or a DC wind generator into a battery.Simple +positive/-negative (GND) two-wire input (Source) and two-wire output (Load) for series insertion into circuit.Two-line LCD - updated every 0.4 seconds - displays eight different values:Power 0 - 6554 Watts to 0.1W resolutionCurrent 0 - 100 Amps (max) 50A continuous to 0.01A resolutionVoltage 4 - 60 Volts to 0.01V resolutionPower flow rate 0 - 6554 Watt-hours (Wh) to 0.1Wh resolutionCurrent flow rate 0 - 65 Amp-hours (Ah) to 0.001Ah resolutionpeak current in Ampspeak power in WattsVoltage minimum (dip) over monitoring periodLow in-circuit resistance just 0.001 Ohms negligible 7mA circuit load.Due to different batches, there may be differences in the appearance, color, and printing of the product, which will not affect its use.Colour:blueMaterial:MetalPackage Contents:1 x AnalyserOnly 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.