| Business | Phone |
| Anchor Alarm 349 Bay Shore Rd, Deer Park 11729 | (631) 254-0516 |
| Audio-Mobile Inc 40 Burt Dr, Deer Park 11729 | (631) 242-4242 |
| Automotive Security Equipment 1 Saxwood St, Deer Park 11729 | (631) 586-1473 |
| National Security 166 W 4th St, Deer Park 11729 | (631) 667-2900 |
| Dlc Systems Inc 166 Washington Ave, Deer Park 11729 | (631) 243-1646 |
| Safehouse Security Systems Inc 220 Burlington Ave, Deer Park 11729 | (631) 242-6940 |
| Superior Security Specialties 48 Glenda Dr, Deer Park 11729 | (631) 242-3774 |