The Comfort Controller 6400-I/O is used with the Comfort Controller 6400 to expand the field point capacity from 16 points (8 inputs and 8 outputs) up to a total of 64 points.
Each 6400-I/O can be configured to use all 16 points (8 inputs and 8 outputs) or only 8 outputs or only 8 inputs. This provides the ultimate flexibility in usage of field points to meet the specific needs of each application. Determine the number of 6400-I/O required for your particular application. Then simply install the modules along with the 6400 in your field-selected NEMA-3R enclosure.
To determine the number of 6400-I/O required by the particular application, first decide how many field points are required. Then order and install the 6400-I/O(s) along with the 6400 in your field-selected enclosure. This modularity contributes to overall versatility.