The Original Sound Conditioner, formerly known as the Sleepmate/Sound Screen 580A. A white noise sleep sound machine. SS=single speed.

The Dohm-SS by Marpac effectively masks unwanted noises and creates a sense of calm, making it easier to concentrate, relax, or get some serious sleep. This white noise generator is recommended for restless sleepers, shift workers, infants, children, students, apartment dwellers, and many others. The Original Sound Conditioner first introduced in 1962; now in its 4th generation design. The Dohm-SS features one single powerfully soothing speed. 

• Creates the soothing sound of rushing air, known as "white noise"- the single speed of the Dohm-SS is the higher of the two speeds available on the Dohm-DS
• Provides excellent noise-masking capabilities and a soft comfortable background sound where it might otherwise be too quiet
• Perfect for baby nurseries, day care centers, college dorms, apartments, or any sleep environment where unwanted, disturbing or intrusive noise is a problem
• Made of durable plastic
• Suitable for home, office, or travel
• Made in the USA; UL listed; one year limited warranty

Please Note: This item has been built to U.S. electronics specifications and may need additional modifications or converters to be used in countries other than the U.S. and Canada.