... conditioning, ventilation,water valve control system Power supply 220VAC±10% , 110VAC±10% , 24 VAC±20% selectable in order Rate contact current ... on 1.Typical used in FCU air conditioning systems,ventilation systems, and water valve control and other systems2.Designed ... ×65mm box1.Typical used in FCU air conditioning systems,ventilation systems, and water valve control and other systems2.Designed ...