Replacement panel mount rheostat and variable speed controller with integrated on/off switch. Used on the following Lopi units: Sturbridge Sweet Dreams Features Infinite RPM range control Integrated ON/OFF switch High-gain RFI filter Cardboard housing Dimensions - 3" x 1 1/8" x 1" Wire lead - 7" Male and female terminal connectors included, loose - Compatible with Lopi Volts:120