2 speed. 1/3 HP to 1 HP 115V. Automatically controls the operation of the evaporative cooler. LCD digital temperature readout with electronic temperature sensor circuitry. Constant room temperature displayed. Easy single touch temperature adjustment. Case door covers operating controls. 4 minute blower start delay when using pump feature for pad wetting. Installs in standard depth 2 x 4 single gang electrical box. UL listed, 1 HP, 115 VAC, 60 Hz.