Considering the particularity of the winding resistance, a little white smoke and odor will appear after the initial use of the electricity for a certain period of time, because the exterior paint also contains a very small amount of water, and the electricity is heated at a high temperature and the water evaporates to form white smoke. The outer paint is affected. High-temperature bake produces odor and disappears completely after a period of use. This phenomenon will inevitably occur. It is normal and you do not need to worry about the load tester being damaged. Please use it with confidence.
  3. With the USB voltage and current detector sold by our shop to test, it is more intuitive, and you can see the voltage and current conditions during the test.