The UZC4 Universal Zone Control System allows you to easily upgrade an inefficient single zone HVAC system, into an Automated, Multi-zone, Energy saving, Comfort producing, Safety Minded, HVAC system. With Superior design, Intuitive firmware, Building Code Compliant support, Simple setup options, and Easy to understand wiring, the UZC4 Zoning system is the Designer/Contractors dream. Combined with Patented EWC motorized dampers and practically any Off-theshelf Conventional or Heat Pump style Thermostats, EWC has set a New Industry Standard in Large Residential and Commercial HVAC Air Zoning Systems., Compatible with all HVAC systems with up to 4 stages of heat and two stages of cool.