Expandable 2 Zone Outdoor Irrigation Timer The TMC-212 has an array of features with advanced, modular construction. Options such as indoor and outdoor models and a station count of two to twelve make it a fit for a variety of residential applications. It is simple to program and install, and its solid-state technology will stand the test of time. Features Three fully independent programs with four start times per program Station count modularity from 2 to 12 stations in two-station modules Hot-swappable station modules Non-volatile memory requires no batteries Three-year warranty.