这是替代电阻箱，低成本的替代解决方案，高精度、宽电阻选择范围，步进精度0.1R。对于教育实验，电子工程设计或测试修剪是一个很不错的应用选择 ，可以灵活，方便，快速，便捷的设置电阻范围从0.R到9999999.9R或者是0.1-9.9999999MΩ（0-10MΩ）。

产品详情参数介绍
基于“电阻级数”定理的设计
每个电阻的精度为1%
每个电阻的额定功率为1/2W
镀金双排插针使用寿命长
固定孔中心距离121mm×29mm，固定孔直径为3.1mm，板厚1.6mm
高品质FR4玻璃纤维印刷电路板，尺寸128×36mm，高度<20mm
带配件的8个跳线帽可编程电阻：0.至9999999.9欧姆，每步0.1欧姆

This is "resistance substitution box" good low-cost alternative solution, can flexible and quick setting resistance range from 1R to 9999999R, 

step accuracy 1R. for educational experiments, electronic engineering design or test trimming are excellent applications.

Features:

Design based on "resistors series" theorem.

1/2 watt tolerance +/-1% SMD resistors.

High quality FR4 glass fiber PCB.

With spare parts 7 pieces jumper caps Programmable Resistance: 0 to 9,999,999 ohm, 1 ohm per step.

Resistance Tolerance: +/-1%

Rated Power: 1/2 Watt.

Max. Working Voltage: 200V.

No retail package

Package includes:

1Pcx 1R - 9999999R Seven Decade Programmable Resistor Board Step 1R 1% 1/2 Watt