DC 100V 50A 100A LED Digital Voltmeter Ammeter DC Voltage Current Meter Ampere Tester DC Amp Panel Meter Volt Current Monitor Red Blue for Auto Car LED Display Gauge Voltage below 10V can be measured and displayed as 0.00V; The current test starts from 0.05A, when the current is le than 0.05A, it displays 0.00; the current is not forced to zero; 350A, 100A range measurement is le than 10A current can also display 0.00A, but the error of the last digit is large, for reference only and can be ignored. Note: The current below 0.05A cannot be measured. When the test is 50A100A, it can also display 0.00A below 10A. However, the error is relatively large. When using a 50A/100A range meter to measure current below 10A, the last digit must be ignored. Working voltage: DC4~30V (5~12V recommended) Working current of Meter itself: 20mA Measuring current range: DC0.05A~50A/100A (display mode 0.0A~10.00A~100A) Voltage measurement range: DC 0 - 100V (display mode 0.00V~10.0V~100V) Refresh speed: 300ms/time Display mode: 0.28 inch 3-digit LED, two color blue and red Product size: 47.65*28.82*22.20mm Operation Temp: -10C-+65C Hole size: 45.526.0mm Product weight: about 20g Wiring Diagram: Black - Red : Working voltage of Meter itself: DC 4 - 30V Black - Yellow : Voltage Measuring range: DC 0 - 100V Reverse connection protection: there is reverse connection protection of working power supply, but long time reverse connection may also cause damage. Product wire: 5 wires (3P thin wire, 2P thick wire) Lead definition: Thin red line: positive pole 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 positive pole of the current test, in series with the negative pole of the load Thick black wire: the negative pole of the current test, connected to the negative pole of the load power supply 1 * DC 3-digit Precision Dual Display Voltage Current Meter Notice This product does not contain a shunt 64420 More To Love