The RDCZ9 series are residential digital controllers. They are feature a wide power supply range 110—230 VAC – 50 / 60 Hz. The controllers provide a variable output signal between a selectable minimum and maximum level (percentage of the supply voltage). They also provide a start-up mode selection and adjustable duration time. The settings are easily adjustable either through a 3-button interface equipped with a LED display or via 3SModbus software application.