ZTECH 4 Zones HVAC Controller (for Standard or Heat Pump Systems)

The ZTech 4 Zones HVAC Controller (for Standard or Heat Pump Systems) allows up to 4 standard electronic thermostats to independently control the temperature in up to 4 "zones" or areas of a building using a single heating and cooling mechanical system. Temperature control is achieved by opening or closing motorized dampers in forced air systems or valves in hydronic systems. The 4 Zone HVAC Controller is compatible with Standard or Heat Pump HVAC systems. For Standard HVAC systems, the controllers work with any residential style single stage heat, single stage cooling systems (for split systems with separate power supplies, an external relay is required). For Heat Pump HVAC systems, the controllers work with any residential style two stage heat, single stage cooling systems. The controllers can work with systems with either changeover with cooling (O) or heating (B) inputs. The four zones are truly independent and can be in any mix of heat