KNPA1WJ0101A10 is a 1-watt wirewound variable resistor manufactured by Royal Ohm. It is constructed of a carbon or metal element that is encased in ceramic insulation with a nickel-plated steel core. The resistance range is from 1KO to 1MO and the power dissipation is 1W. This resistor can be used in AC/DC applications and is resistant to high frequency and high temperature.