| Color | black |
|---|---|
| Brand | Unbranded |
Check the listing for details. 0-9999.9 Ohm Variable Resistance Box Decade Resistor For Physical Resistance New. Color: black, Condition: New. Listed at 28.00 USD. The 23022 teaching resistance box has a sealed structure of rubber and wood. The resistance value change is in the form of a knob switch, which relies on the rotation of the brushes to different positions to achieve the purpose of resistance value change.