| Business | Phone |
| Action Alarm Specialists Inc 5273 Ridge Ave, Philadelphia 19128 | (215) 483-5722 |
| Adt Security Svc 841 Chestnut St, Philadelphia 19107 | (215) 923-6501 |
| Adt Security-Residential 4705 Lawrenceville Hwy, Philadelphia 19112 | (215) 203-0500 |
| Afa Protective Systems Inc Philadelphia 19132 | (215) 223-4422 |
| Alarm Service Co Of America 110 S 20th St, Philadelphia 19103 | (215) 532-5985 |
| Alarm Systems Philadelphia 19136 | (215) 338-9910 |
| Alarm Wizards Philadelphia 19136 | (215) 708-3733 |
| Alarmist Security System 24 E Benezet St, Philadelphia 19118 | (215) 242-6161 |
| Alert One Inc 6347 Rising Sun Ave, Philadelphia 19111 | (215) 725-1111 |
| American Protection Inc 2648 S Mildred St, Philadelphia 19148 | (215) 271-3930 |
| American Security Corp Philadelphia 19102 | (215) 545-5333 |
| Apple Alarm Co Inc Philadelphia 19148 | (215) 336-9720 |
| Asca 110 S 20th St, Philadelphia 19103 | (215) 564-6565 |
| Burglar Alarm Systems Ltd Philadelphia 19134 | (215) 423-1206 |
| Car Alarm Shop Inc 5514 Chestnut St, Philadelphia 19139 | (215) 472-2486 |
| Chalmers Security Systems Inc Philadelphia 19111 | (215) 342-5625 |
| Victor Security Philadelphia 19118 | (215) 247-7775 |
| Digital Security Systems Inc 11301 Norcom Rd, Philadelphia 19154 | (215) 464-6005 |
| Edtronics Security Systems Philadelphia 19120 | (215) 324-2900 |
| Fidelity Burglar & Fire Alarm 1900 Woodhaven Rd, Philadelphia 19116 | (215) 673-8800 |
| Fidelity Burglar & Fire Alarm 6318 Frankford Ave, Philadelphia 19135 | (215) 535-7246 |
| Fortress Protection Philadelphia 19102 | (215) 854-8400 |
| Haussmann's Lock Svc 931 Hoffnagle St, Philadelphia 19111 | (215) 722-6649 |
| Hi-Tech Security 1731 Orthodox St, Philadelphia 19124 | (215) 533-0552 |
| Hi-Tech Security Systems 7061 Castor Ave, Philadelphia 19149 | (215) 725-5525 |
| Jonas Security Alarm Co 4544 E Stiles St, Philadelphia 19124 | (215) 743-4126 |
| K-B Security Inc Philadelphia 19148 | (215) 334-1438 |
| M & A Alarm Systems 4746 Worth St, Philadelphia 19124 | (215) 537-4850 |
| Main Line Fire & Security Philadelphia 19115 | (215) 464-9280 |
| Maximum Security Svc 7337b Wissinoming St, Philadelphia 19136 | (215) 708-0800 |
| Next Generation Security 808 N 19th St, Philadelphia 19130 | (215) 978-7000 |
| Ogontz Electronics 6707 Ogontz Ave, Philadelphia 19126 | (215) 548-3383 |
| Richardson Alarm Svc 1535 South St, Philadelphia 19146 | (215) 735-3010 |
| Richmond Alarm Co 2544 E Indiana Ave, Philadelphia 19134 | (215) 634-1409 |
| Shepparddetective System Inc 2810 N Broad St, Philadelphia 19132 | (215) 225-6100 |
| Treasury Alarm Co Inc 5734 Tulip St, Philadelphia 19135 | (215) 535-3950 |
| Tri State Alarm Co Inc Philadelphia 19106 | (215) 351-9550 |