AutoFoam is the latest innovation by Technical Concepts. While combining high capacity with world-class reliability and environmental savings, AutoFoam delivers a much smaller dose of very concentrated, enriched foam soap to provide the most hand washes while simultaneously being energy efficient. Energy efficient cam-gear technology provides industry-leading battery life - up to 120,000 dispenses or 3 years. Reduces packaging waste by up to 80%. (Requires 4 C-Cell alkaline batteriers, not included)