Water pressure alone usually isn't enough to run the entire system at one time therefore, sprinkler valves are used to divide the system.; ; Brand Name: Champion Programmable: Yes Number of Zones: 6 Zone Product Type: Indoor Sprinkler Timer Number of Programs: 3 Color: Black Automatic Rain Delay: Yes Computer Software Compatibility: Yes Packaging Type: Boxed Power Source: Electronic Battery Backup: No Digital Display: Yes Expandable: No Drip and Soaker Hose Compatibility: Yes