Spec:Item Type: Resistance TesterModel: VC480C+Material: ABSPower Supply: 6xAA 1.5V Battery / External DC 9V Adapter Power Supply (Battery and power Supply Not Included)Purpose: It can be used for low resistance test.Range Accuracy Resolution Test Current 20 mΩ ±(0.5% Reading±3) 0.01 mΩ About 100mA 200 mΩ ±(0.5% Reading±3) 0.1 mΩ About 50mA 2 Ω 1 mΩ 20Ω 1 0mΩ 200Ω 1 00mΩ 2kΩ 1Ω Special Function VC480C+ Low Voltage Display Approximately Lower than 7.5V Display Data Retention √ Backlight Display/Function √ Sampling Rate 3 Times/Sec Operation Method Manual Range Maximum Display 1999 LCD Size 75x52mm Power Supply 6 x 1.5VAA Batteries / External DC 9V Adapter Power Supply Power Consumption Quiescent Current about 6mAPackage List:1 x Resistance Tester (Battery Not Included)2 x Four-Wire Test 1 x Strap1 x ManualHow To Use:1. The power‑on screen displays 1. Insert the two plugs of the red test into the two red jacks on the right and the two plugs of the black test into the two black jacks on the left.2. Turn the knob switch to the desired position, first clamp the top with two test clamps, and then adjust the zero adjustment button until the screen displays zero (Note: each range should be adjusted first and then zero Test, so that the measured value is more accurate).3. Take the measurement of a resistance with an RB of 190 as an example, turn the revolving switch to the range of 200mΩ close to it, and clamp the two ends of the resistance with two test clamps. The measured value displayed on the screen is 19mΩ. At this time, if you press the hold switch, the current value will remain on the display, and press the hold switch again to cancel the hold function.Note:When using the resistance tester, do not touch the metal part of the test with your hands to ensure safety.