| Business | Phone |
| C L & J Electric Co 1188 Broadway, Hewlett 11557 | (516) 374-1488 |
| Seaview Alarm Corp 74 Crystal Ct, Hewlett 11557 | (516) 569-4554 |
| Liberty Bell Alarm Corp 287 E Rockaway Rd, Hewlett 11557 | (516) 295-2953 |
| Snooper Security Inc 52 Raymond Pl, Hewlett 11557 | (516) 295-2336 |
| Telestat Security 20 Franklin Ave, Hewlett 11557 | (516) 295-0857 |