Why Does Earth’s Magnetic Field Mess up My UNI-T Digital Multimeter Low Current Readings?

You might notice your UNI-T multimeter gives weird numbers when measuring tiny currents. This happens because Earth’s weak magnetic field actually interferes with the meter’s sensitive internal parts. When you measure microamps or milliamps, even stray magnetic fields from your desk lamp or power cord can throw off the reading. Your UNI-T meter is designed … Read more