Usage Tips:[9-in-1 multifunctional meter] It can be used to test the battery voltage, the discharge current, the discharge power, the discharge cap, the internal resistance, capacity, energy, energy consumption and the term.FCC and CE certification passed. [Measuring area] voltage test area: DC 0-200V;Electricity test area: 0-100a;Discharge: 0-20000W;Discharge frame: 0-1000Ω;Interior resistance: 0-999mΩ;Capacity: 0-1000AH;Soc;Energy: 0-9999KWH;Duration: 0-999h. [LCD accusation and backlight] LCD screen with blue film, 360 ° viewing angle, shows nine groups of measurement data at the same time.With the background lighting function it is clearly visible day and night, the LCD screen improves the visual experience, saves energy and electricity. [Wide application] High -precision spankon role, welding process is firm and safe.The data is precise, efficient and stable.Applied to the solar system/industrial assembly line/automobile/RV etc., all types of batteries, pipeline tests, electrical DC devices.Note: The wiring order should not be wrong, the load should not exceed the nominal output, the module is suitable for indoor use, not for outdoor use. [No screw design and material] The plug -in meter saves time and effort, does not have to be connected to a screw, is easy to install and has a nice and easy look so that it can simply be placed in different locations.The outer shell is made of reinforced nylon, which is delicate and pleasant to wear.It has several protective devices and is elastic and does not break. Material: Plastic + metal colour: Black Package Contents: 1 x PZEM015 battery test tester 1 x 100A shunt 1 x cable tie 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.