portable, compact, and flexible resistor box This is a convenient alternative to potentiometers and larger resistor boxes. When not in use, you can simply stash it in a drawer or bag. Features: A portable, compact, and flexible resistor box. This is a convenient alternative to potentiometers and larger resistor boxes. When not in use, you can simply stash it in a drawer or bag. No more searching for it everywhere. You've made the right choice! Instructions: The resistance box has 8 levels, each adjustable from 0 to 9. These are 1M, 100k, 10k, 1k, 100Ω, 10Ω, 1Ω, and 0.1Ω. For example, to select 23.6K, then: x1M, select 0; x100K, select 0; x10K, select 2; x1K, select 3; x100R, select 6; x10R, select 0; x1R, select 0; x0.1R, select 0. Resistance value = 0x1M + 0x100K + 2x10K + 3x1K + 6x100R + 0x10R + 0x1R + 0x0.1R = 23.6K Specifications: Part Name: WY-RES-01 Resistor Box Material: ABS Color: Gray size: As shown Adjustment Range: 2Ω~9999999.9Ω Resolution: 0.1Ω Accuracy: 1% Power: 250mW 1*WY-RES-01 Resistor Box Package Contents: 1*Resistance Box