Reliable, controlled dispensing of concentrated soaps eliminates overuse and costly waste. No clogs, drips, or messy cleanup. Closed dispensing system provides world-class reliability. Programmable options for 800 mL and 1600 mL refills. Helps earn LEED credits. ADA Compliant. Requires 4 "D" alkaline batteries (sold separately). Use enriched foam refills only. Not compatible with enriched lotion refills.