Acxico 1Pcs Resistance Box 0-9999.9? 5 Gears Adjustable Decade Resistor Usage method: Through the two terminals on the panel to access the circuit, five knobs can be adjusted to get a certain resistance value in 09999.9 ohm. The resistance indication is the sum of the readings of the indicating points of each knob multiplied by the above multiples. Generally, the value of the indicating points of each knob is read out in sequence from high multiples to low multiples. This value is the resistance indication. Note: Manual measurement, with small error. Please check size in detail before purchase. Real colors may slightly differ from the pictures, as it depends on specific monitor settings and light brightness. Package Includes: 1Pcs 0 to 9999.9 ohms variable resistance Available range?5 Switchable Ranges Resistance Range?10 x ( 1000 + 1000 + 100 +10 + 1 +0.1) Ohm Operation Condition?10 to 40C,25%?80% Relative Humidity Normal Power / Power Limit?0.5W / ?1W?Insulation Resistance?? 50 M Ohms