Touch-free and easy to use! Touch-free design with an infrared sensor to detect hand motion Precise portion control offers cost-effective dispensing. Sleek and compact design complements most facilities. Clear volume window indicates when it is time to replenish the soap. Durable ABS construction with an easy-to-clean cover. Enclosed motor operates quietly. Uses Betco 1,000mL refill soap bags (sold separately). Betco 1,000mL refills are compatible with most Betco touch-free and manual dispensers and feature large labels for easy identification and up to 98% evacuation, ensuring more of the product is available for use. Powered by 4 C-cell batteries that last 6 months or 60,000 cycles. Dispenser light shows you when it is time to replace the batteries (batteries included).