The AT401PM is a new addition to the desert cooling series. This model includes the 3-sided honeycomb cooling, a continuous water supply connection and built-in water overflow protection system. The durable casters allow you to easily transport the cooler from room to room. This cooler provides excellent air flow to keep even larger rooms, including your den or semi-covered patio, cool and breezy. The AT401PE is an advanced version of the AT401PM, with added digital control panel and electronic features, including a full function remote control, optional low water alarm and automatic off timer for easy maintenance and added convenience.