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| PartNumber | HW4B-M210-S | HW4B-M220-S | HW4B-M2F01-S |
| Description | Pushbutton, HW Series, Metal Bezel, Extended, Spring Term, 1NO, Mom, Blue | Pushbutton, HW Series, Metal Bezel, Extended, Spring Term, 2NO, Mom, Blue | Pushbutton, HW Series, Metal Bezel, Extended, Non-Illum, 1NC, Mom, Blue |