Hunter Pro-C PC-400 4 Zone Base Controller; Outdoor Model w/Internal Transformer and Lockable Cabinet Flexible design: Modular model offers 416 stations, or choose fixed 6 or 12 station models Solar Sync dial position: now available with built-in Solar Sync programming for increased installation efficiency Solar Sync delay feature: allows adjustments to be postponed for up to 99 days Cycle and Soak feature built in: reduces runoff Warranty period: 2 years