High Precision DC 100V 200V 10A Voltmeter Ammeter Digital Display MeterOOTDTY Features:1. Minimum mA and mV levels can be displayed (200V range cannot display mV levels)2. Silk lens monitor, Chinese and English, international common unit symbols, clear at first glance,3. The built-in simulator can be reset to zero automatically (30153 series current can not be reset to zero automatically, sometimes customer need to manually reset to zero if it does not return to zero)Specifications:Working Voltage: DC4 - 30V (5 - 12V recommended)Current Measurement Range: DC10A (0.000A - 10.00A Display Mode)Voltage Measurement Range: DC 100V (0.000V - 10.00V - 100.0V Display Mode)DC 200V (0.00V - 10.00V - 100.0V Display Mode)Refresh Time: 300msDisplay Mode: 0.28 inch 4 Digit LED Product Size: 60.00 × 28.60 × 22.00mmHole Size: 57.5 × 26.0mm Product Weight: 25g Realization Resolution: Thin Red Line: Positive Instrument Power FieldThin Black Wire: The negative electrode of the instrument power supply is also a common ground wireThin yellow wire: Positive voltage measurementThick red line: Positive pole of current test, in series with the negative pole of loadThick black wire: Negative pole current test, connected to the negative pole of the load power supplyPackage included:1 * voltmeter ammeter2 * leads