Since 2001, the Pro-C has been the contractor's choice in residential irrigation control. The Pro-C has proven to be the most reliable and robust controller in the industry, with the flexibility to expand on demand due to its modular design. When expansion isn't necessary, the fixed 6 and 12 station models offer affordability in a high-end residential controller. Now, the Pro-C will easily accommodate Hunter's Solar Sync® without additional wiring. The new Solar Sync™ dial position makes it easy to upgrade and program any Pro-C to smart control. The Hunter Solar Sync is a smart device which calculates evapotranspiration (ET) and adjusts Hunter controllers daily based on local weather conditions, resulting in water savings and conservation.