System Engineering International, INC.
5115 Pegasus Courtsuite Q, Frederick, MD 21704
Present in a source dataset, with no recent operating signal.
What they make
Telephone Apparatus Manufacturing334210SEI manufactures direct current (DC) critical power systems and customer-premises power equipment. The company produces 2. 2U rack- are industrial users, wireless providers, telephone service providers, and the military. Products include power over ethernet, uninterruptible power systems, ISDN, VoIP, DC power products, and DC UPS solutions in 24Vdc and (24Vdc and 48Vdc, and
SUMMARIZED FROM THE COMPANY’S OWN WEBSITE
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Wgs Systems, LLC | Frederick | Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 334511 | LIKELY ACTIVE | 0.3 KM |
| American Computer Development, Incorporated | Frederick | Printed Circuit Assembly (Electronic Assembly) Manufacturing 334418 | ACTIVE | 0.9 KM |
| Drs Signal Solutions, INC. | Frederick | Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 334220 | ACTIVE | 1.3 KM |
| System Engineering International INC | Frederick | Other Electronic Component Manufacturing 334419 | ACTIVE | 2.5 KM |
| Cdc Cellular Repair Services, LLC | Frederick | Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 334220 | UNVERIFIED | 2.5 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 1 FEDERAL SOURCE, 5 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
EPA cross-references this facility in OSHA-OIS.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| EPA FRS | EXISTENCE | SEP 2018 | SEP 2018 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| CITY | EPA FRS | JUL 2026 |
| GEOM | CENSUS GEOCODER | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| STATE | EPA FRS | JUL 2026 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.