Valve Highlights  w Three modes of operation meter immediate, meter delayed, or time clock delayed  w Double backwash feature, offers optimum regeneration, efficiency and cleaning ability  w Variable Reserve that adapts to lifestyle based on water usage history  w Days override feature 1 – 28 days available  w Backwash and brining ability to 21” diameter commercial tanks  w Downflow regeneration  w Stores system configuratio w Solid state microprocessor with easy access front panel settings and operation data in non volatile memory  w Coin cell lithium battery back-up with 8 hour power carry over  w 12-volt output UL CSA AC adapter provides safe and easy installation  w Control valve design provides optimum service and backwash rates  w Treated water regenerant refill  w Modular design with no screws to lose  w Service Reminder with telephone number w/choice of time and/or gallons