Boiler Zone Control,6 Zone, Expandable, Application Hot Water Heating Systems, Closed, Cooling Circuits,Air Conditioning Systems,Hydronic Heating and Cooling,Water/Glycol concentrations up to 50 PercentSolar / Geothermal, Full Load Current @ 120V AC 0.6 A, Locked Rotor Current @ 120V 1.5 A, Current Rating 0.6 A, Electrical Connection Type Screw Terminals, Minimum Control Temperature Not Applicable, Maximum Control Temperature Not Applicable, Number of Zones 6, Standards UL Listed