| Business | Phone |
| Electronics Security Controls 530 Nassau Blvd, West Hempstead 11552 | (516) 486-5223 |
| Fire Alarms & Smoke Detection 94 Cherry Valley Ave # A, West Hempstead 11552 | (516) 486-4848 |
| Strategic Alarm Concepts Ltd 366 Hempstead Ave, West Hempstead 11552 | (516) 489-5550 |