SHARP WINDOW AIR A/C SWITCH ERA4506 W/KNOB ERA506 IS ON THE SWITCH THIS INCLUDES A 30 DAY WARRANTY REMOVED FORM A SHARP 6500 BTU WINDOW A/C MODEL NUMBER AF-608M6 THERE IS A KNOB INCLUDED WITH IT SEE MY PICTURES OF THE ACTUAL ITEM YOU WILL RECEIVE FREE SHIPPING IN THE U.S.A.