| Relationships | Role | Relationship Start | Relationship End |
| Electrocom Automation L.P. | Parent | 7/2/1990 | 12/31/1996 |
| Electrocom Communication Systems L.P. | Subsidary | 3/31/1992 | 12/31/1996 |
| Relationships | Role | Relationship Start | Relationship End |
| Electrocom Automation L.P. | Parent | 7/2/1990 | 12/31/1996 |
| Electrocom Communication Systems L.P. | Subsidary | 3/31/1992 | 12/31/1996 |