Solar control system with 1 solar valve black and grey in color; one touch function - no complicated routine to memorize * Ability to program pool, spa and two additional features; all circuits can control four operating schedules it maximum six total schedules per system * Supports 4 features circuits for programming convenience * Compatible with gas or electric heaters, heat pumps, and solar systems * Measures 24-inches in length by 24-inches in width by 24-inches in depth; temperature control can be set in one degree increments