CrocSee DC 0 100A LCD Display Digital Current Ammeter Amp Meter Amperage Monitor Gauge with 100A Current Shunt Round Pannel

Main Specifications: Power Supply: DC 5-12V Recommended Hole Cutout: 61mm(2.4") diameter Measuring Accuracy: 1% Measure range: 0-100A The white backlight can be turned on/off manually through pressing the button on the back Calibration: Step 1: Press and hold the button for 3 seconds. Release it until the digit flashes; Step 2: Three digits and decimal point flash one by one. When the digit flashes, press the button to adjust the number from 0 to 9. When the decimal point flashes, press the button to shift; Step 3: Save. Press and hold the button until the screen displays PASS and then displays the normal reading. Cautions: 1. This meter can only measure DC current, please don't use it to measure AC current. 2. Power supply and measured current can't exceed the reference range. 3. This meter is suitable for indoor applications, please do not use outdoors. 4. Wiring can not be wrong.