4-Way Rotary SwitchA 4 way switch to manually adjust ventilation rate. It allows the user to control the speed of airflow for when the building is occupied, not occupied or when a boost is necessary. The red LED warning light illuminates when filters need checking, this same LED will flash to indicate a fault on the machine. It is possible to connect multiple switches by means of a splitter. Think, for example, of an extra switch in the bathroom The switch includes
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