CLEAR DISPLAY: The digital voltmeter ammeter has a clear and bright 1.57in LED screen to display voltage and current values ACCURATE CALIBRATION: The volt tester meter amp detector uses voltage and current calibration potentiometers and come with 2 connecting cables for easy use MAIN APPLICATIONS: Voltage current meter can be used to monitor batteries, solar panels, railway models, motorhomes, motorcycles, household batteries, motors, etc. SCRATCH RESISTANT ABS: DC voltage current meter adopt excellent ABS material, possess impact resistance, scratch resistance, environmentally friendly TECHNICAL PARAMETERS: Voltage amperage monitor gauge voltage measurement range from 0.0V-100V, current test range support 0-10A, 0-50A, 0-100A(there are 3 ranges)