The dual satellite brewer from BUNN brews 17.5 to 20.3 gallons of perfect coffee per hour. Equipped with hot water faucet and mechanical thermostat. The single batch size brews 1 12 gallons of perfect coffee every time. The two 1 12 gallon portable servers included with the brewer have a patented Safety Fresh brew through lid with vapor seal and spill protection for added safety.120208V, require 3 wires plus ground service rated 120208V, single phase, 60 Hz.