Introduction to installation of the Hunter Dual decoder two-wire system with I-Core controller. This video series will go over DUAL, a two-wire decoder system to be used with Hunter I-Core controller. DUAL two-wire technology can change the way you look at control systems, offering: Faster installation, Lower installation costs with less copper wire, total flexibility to add and move valves after the original installation, easier troubleshooting and diagnostics, enhanced resistance to surge and lightning damage.