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.
Screw terminal block easy to connect wires.
High quality FR4 glass fiber PCB.
With spare parts 10 pieces jumper caps (on board 7 pieces， total 17 pieces).
Programmable Resistance: 0 to 9，999，999 ohm， 1 ohm per step.
Resistance Tolerance: +/-1%
Rated Power: 1/2 Watt.
Max. Working Voltage: 200V.
PCB Size: 110mm x 40mm / 4.4" x 1.6"
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Shipping:
1. Import duties， taxes and charges are not included in the item price or shipping charges. These charges are the buyer\`s responsibility.
2. Please check with your country`s customs office to determine what these additional costs will be prior to bidding/buying.
Return Policy:
If the item is defective， please contact us within 30 days， you can choice money back or item exchange.
Contact us:
Any questions， please feel free to contact us. due to time zone differences， we may not immediately answer you， but we promise to answer you within 24 hours.