Features:100%brandnewandhigh-quality.Split-type:easytoinstall,thetransformerisseparatedfromtheinstrument,andthetransformercanbeinstalledaccordingtotheactualpositionofthemeasurement.(Itcanlengthentheleadatthesecondendofthetransformertoreachtheidealinstallationposition).Two-wiresystem:Noneedtoconnectthepowersupply,redandblacklinestomeasurethevoltageatthesametimetothemeterheadpowersupply(noneedtosplitpolarity).Currenttestingrequiresnoadditionalpurchaseoftransformer.Theinstrumentisequippedwithahighprecisiontransformer.Inthewatchhead,l-setfine-tuningpotentiometercancalibratethevoltageandcurrenterrorbyitself.Specification:TherangeofvoltagemeasurementAC100V-300VTherangeofcurrentmeasurement10A(0.00~9.99A)DisplaymodeDouble0.39brightLEDdigitaltubeDisplaycolor(Optional)Red+red/red+blue/blue+blueMeasurementaccuracy1%2digitsDisplay0.39inchesLEDdigitaltubedisplayMeasurementspeedabout2timespersecondDimensions70*40*30mmInstallationdimensions68*38mmPowersupplyline,measuringlinelengthabout150mmsplittransformerleadlengthabout100mmWorkingtemperature-10~+50Workinghumidity10~80%(withoutcondensation)Workingpressure80~106kPaSunshineNodirectexposurePackageList:1*Currentvoltmeterhead1*mutualinductancecoil1*AdapterNote:Thewiringsequenceoftheinstrumentis:thecircuitofthecurrentloopisconnectedfirst,the220Vvoltageisfinallyconnected,afterconnectingthe220Vpowersupply,itcannottouchanypartsandcircuitsbehindtheinstrumenttopreventthedangerofelectricshock.Split:GreenterminalisconnectedtoACtransformerCT,twoyellowlinesareconnectedtomeasureACvoltage,donotconnectwrong,connectwrongwillcauseinstrumentdamage,theresponsibilityisself-conceited.Thismeterisdesignedbasedontheprincipleofcapacitancestep-down,becausethehigherthefrequency,thesmallertheimpedanceofthecapacitor,soitisnotsuitabletobeusedinhigh-frequencyelectronicspeedregulation,non-cityelectricsinewavefrequency,orotheroccasionswheretherearehigh-frequencycomponents,otherwiseitiseasytoburndownWhenselectingtherange,thelargertherangeis,thegreatertherangeis,thegreatertheerroris.Itissuggestedthat1.5timestheactualtestvaluebe.Pleasenotethatthenewtypeandoldtypeofthisproductwillbesentrandomly,andmakesureyouwillnotmindbeforeordering.