1.The resistance range can be set flexibly and quickly from 0.1R to 9999999R, with a step                  accuracy of 0.1R -Based on the design of “Resistor Series” theorem, 1~2 watt tolerance+/‐1% SMD resistor.

2.Using screw terminal block, which is convenient to connect wires. -With spare parts 7 jumper cap programmable resistors, 0.1 to 9,999,999Ω, 0.1Ω/step. -Widely used in educational experiments, electronic engineering design or test trimming is an excellent application.