Features: 1. The minimum mA and mV levels can be displayed (200V range cannot display mV levels) 2. Lens silk screen, Chinese and English, international common unit symbols, clear at a glance, 3. The ontoboard simulator can be automatically reset to zero (30153 series current cannot be automatically reset to zero, occasionally the customer needs to manually reset to zero if it does not return to zero) Specifications: Working voltage: DC4to30V (recommended 5to12V) Measuring current range: DC10A (display mode 0.000Ato10.00A) Voltage measurement range: for DC 100V (display mode 0.000Vto10.00Vto100.0V) for DC 200V (display mode 0.00Vto10.00Vto100.0V) Refresh time: 300ms Display mode: 0.28 inch 4todigit LED Product size: 60.0028.6022.00mm Hole size: 57.526.0mm Product weight: 25g Lead definition: Thin red line: positivetopole of instrument power supply Thin black wire: the negative electrode of the power supply of the instrument is also a common ground wire Thin yellow wire: measuring voltage positive Thick red line: the positivetopole of the current test, in series with the negativetopole of the load Thick black wire: the negativetopole of the current test, connected to the negativetopole of the load power supply Package included: 1 x Voltmeter Ammeter 2 x Leads