| Business | Phone |
| Birchwood Security Systems 67 Vassar St, Garden City 11530 | (516) 825-4504 |
| G C Alarms 1 Commercial Ave, Garden City 11530 | (516) 222-1414 |
| Magnum Security Systems Inc 20 Nassau Blvd S, Garden City 11530 | (516) 486-5484 |
| Moore Enterprises Inc 1225 Franklin Ave, Garden City 11530 | (516) 512-8982 |