10pcs/lot USB Resistor Electronic Load w/Switch Adjustable 3 Current 5V Resistance TesterMaterial: PCColor: As shown in the picture1, the load device is working, winding resistance caused by large current, will produce very, very high temperature, therefore in the process of use, and just use the finished in a short period of time, absolutely can't human exposure golden metal radiator parts, to avoid the scald!Nor to flammable items contact tester, in order to avoid the fire!2, considering the particularity of heat resistance, the initial use of electricity after a period of time will appear a few white smoke and smell, because outside the paint contains very little moisture, high temperature electric heating, moisture evaporates form the phenomenon of white smoke, produce peculiar smell by high temperature baking paint outside phenomenon, completely disappear after using for a period of time.This phenomenon is inevitable, belongs to the normal situation.The load applicationCan be convenient to test mobile power charging treasure, mobile phone charger, USB power output current is such as to amount to mark, so long as connect USB above.And can do it for mobile power supply and USB power adapter aging test, aging test discharge resistance will be hot, temperature is controlled in 80 ~ 85, please pay attention to prevent hot.Color: As ShownMaterial: PCPackage Contents:10*USB ResistorOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.