ITEM NAME:Seven Decade 1R - 9999999R Programmable Resistor Board Step 1R 1% 1/2 Watt lj.This is "resistance substitution box" good low-cost alternative solution, can flexible and quick setting resistance range from 1R to 9999999R. 1 x Programmable 1R - 9999999R Resistor Board. step accuracy 1R.