Fangrui Product Details Dc 100v 10a Mini Digital Voltmeter Ammeter Amperemeter Voltage Volt Ampere Meter Indicator Tester Led Display Cable Connector Description: ! Combines Two Functions In One Current (a), Voltage (v) It Is Miniature, Accuracy, And More Cost-effective. One Digital Meter Can Use As Two, And Save Space And Bring More Economy For User. Specifications: Working Current Of Meter Itself:20ma Voltage Measuring Range: Dc 0 - 100v Current Measuring Range: Dc 0 - 10a Voltage Resolution (v): 0. Current Resolution (a): Display: 0.28" Digital Tube, Two Color Blue And Red Operation Temp: -10-+65 Refresh Rate: About 300ms / Times Dimensions:48mm*29mm*22mm Package Included: 1x Dc 100v 10a Voltmeter & Ammeter Notes: Due To The Difference Between Different Monitors, The Pictures May Not Reflect The Actual Color Of The Item. Compare The Detail Sizes With Yours, Please Allow Slight Difference Due To Manual Measurement. Thanks For Your Understandings.