This straightforward, user-friendly sprinkler controller combines simplicity of operation with feature-rich flexibility. For starters, the HRC 100 is enclosed in an indoor/outdoor UL approved case capable of 4,6,9 or 12 watering stations. Each model offers three independent programs– A, B and C –with up to four start times per program. Water conservation features? Of course! The HRC 100 water budgeting feature allows you to set watering durations from 10 to 200 percent of the programmed time, in 10 percent increments.