1. The resistor board uses 0.1% precision resistors, not 1% ordinary resistors.2. The resistor is plug-in, not patch. The distance between the two pins of the patch is small, moisture makes the resistance value smaller, and the stabilityis poor.3. Instead of using a DIP switch, -plated pin is used. The contact resistance of the DIP switch is too large, which affects the accuracy of the small resistance value. The contact resistance of the gold-plated pin is more than half smaller than that of the DIP switch.Name:8 Segment decimal programmable resistor board (one thousandth)Resistance range:0.1-9.9999999MResistance power:0.25WNote:There are differences in the factory batch number silk screen, which does not affect the use.Colour:Material:PCB+electronic componentsPackage Contents:1 * Resistance boxOnly 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.