The meter head is a common ground instrument (that is, the negative pole of the power supply and the negative pole of the signal are connected), it is recommended to use a separate, independent, and isolated power supply (that is, the power supply and the measurement terminal are not related) How to Measure Resistance using Digital & Analog Multimeter Panel Meter 2K LED Digital Resistance Meter Ohmmeter Resistor ... – Vicedeal Common Ground Ohmmeter 20K Resistance Meter OHM Tester Reader Measuring I... – Grandado This ohmmeter is a common ground instrument, non-isolated, it is recommended to use a separate power supply, that is, the power supply is not related to the signal Taidacent Digital Battery Internal Resistance Tester Parameter Power supply: DC5V/DC12V optional (current consumption is less than 50mA) Display range: -1999 ~ 1999 Font size: 0., 56 inches red LED Measurement accuracy: 0., 5 level ± 2 words Temperature drift coefficient: less than 100PPM/C Working environment: 0-50%℃; 80%RH Dimensions: 79x43x28mm Hole size: 76x39., 5mm (±0., 5~1mm) Package type: flat right-angle frame, purple frosted window Resistance Range: 200Ω Display range: 0- 199., 9 Resolution: 100mΩ Input impedance: 200Ω Range: 2KΩ Display range: 0- 1., 999 Resolution: 1Ω Input impedance: 2KΩ Range: 20KΩ Display range: 0- 19., 99 Resolution: 10Ω Input impedance: 20KΩ Range: 200KΩ Display range: 0- 199., 9 Resolution: 100Ω Input impedance: 200KΩ Above 200Ω, within 2KΩ, please select 2KΩ range, resolution is 1Ω Above 2KΩ, within 20KΩ, please select 20KΩ range, resolution is 10Ω Above 20KΩ, within 200KΩ, please select 200KΩ range, resolution is 100Ω
