| Company Name | Street | Suite | City | St | Zip | Phone | Fax | Website |
| Signalgraph Security Inc | 955 5th Ave | New Kensington | PA | 15068 | (724) 339-9897 | (724) 335-9526 | ||
| InterTech Security Systems LLC | 549 Keystone Dr | Ste B | Warrendale | PA | 15086 | (724) 742-4900 | (724) 742-4920 | www.intertechsecurity.com |
| American Alarm Systems | 1097 North Ave | Pittsburgh | PA | 15209 | (412) 821-2500 | (412) 821-2916 | ||
| Security Systems of America | 500 Ardmore Blvd | Pittsburgh | PA | 15221 | (412) 244-4900 | (412) 244-4907 | ||
| SafePoint Technologies LLC | 125 7th St | Ste 600 | Pittsburgh | PA | 15222 | (412) 325-3328 | (412) 391-3663 | www.safepointtech.com |
| Furman Enterprises Inc dba New Sentry Systems | 206 E 26th St | Erie | PA | 16504 | (814) 455-6056 | (814) 454-6064 | www.newsentry.net | |
| Master Fire & Security Systems | 1019 W 26th St | Erie | PA | 16508 | (814) 454-4677 | (814) 456-7704 | ||
| Kint Fire Protection | 1300 Crooked Hill Rd | Harrisburg | PA | 17110 | (717) 221-8000 | www.kintcorp.com | ||
| Law Security | 173 McAllister St | Hanover | PA | 17331 | (717) 633-6116 | (717) 632-5755 | www.channelllocksmith.com | |
| Kleppers Security Source | 117 E King St | York | PA | 17401 | (717) 848-1754 | (717) 848-3360 | www.kleppers.com | |
| SHIELD Security Systems of York | 450 Ardmore Ln | York | PA | 17402 | (717) 751-2520 | www.shieldsecurityyork.com | ||
| Electronic Systems Installers Inc | 56 N Queen St | York | PA | 17403 | (717) 843-9955 | (717) 843-9950 | ||
| Gettle Inc | 2745 Black Bridge Rd | York | PA | 17406 | (717) 843-1231 | (717) 843-2733 | www.gettle.com | |
| Advantage Security Inc | 300 E Market St | York | PA | 17406 | (717) 840-8400 | (717) 840-8600 | www.advantagesecurity.com | |
| 3T Security LLC | 3043 Black Run Rd | Manheim | PA | 17545 | (717) 664-0090 | (717) 664-0091 | www.3tsecurity.com | |
| Select Security | 241 N Plum St | Lancaster | PA | 17602 | (717) 481-7400 | (717) 481-7574 | www.selectsecurity.com | |
| Able Security Inc | PO Box 7973 | Lancaster | PA | 17604 | (717) 392-1748 | www.abletodoit.com | ||
| ABE Alarm Service | PO Box 1144 | Bethlehem | PA | 18016 | (800) 369-0451 | (610) 691-8799 | www.abealarm.com | |
| Four Seasons Security | 1226 Stefko Blvd | Bethlehem | PA | 18017 | (610) 868-8566 | (610) 861-5148 | www.4seasonssecurity.com | |
| Fox Brothers Alarm Services | 3411 Sullivan Trail | Easton | PA | 18040 | (610) 252-7880 | (610) 252-1177 | www.foxbrosalarms.com | |
| Gray Connective Inc | 1350 Tatamy Rd | Easton | PA | 18045 | (610) 253-3081 | (610) 253-8825 | www.grayconnective.com | |
| Datacom Security Systems | 717 Atlas Cir | Northampton | PA | 18067 | (610) 440-0083 | (610) 440-0083 | www.datacomesecuritysys.com | |
| Sentry Security Alarm Services Inc | 842 W 15th St | Hazleton | PA | 18201 | (570) 459-0651 | (570) 459-0651 | ||
| Alarm Installers Corp | 7 W Kinney Ave | Mount Pocono | PA | 18344 | (570) 839-2225 | (570) 839-2214 | ||
| Royal Security Services Inc | RR 6 Box 6404 | Saylorsburg | PA | 18353 | (570) 992-6502 | (570) 992-6081 | www.royalsecurity.us | |
| 1st Alarm Security | PO Box 1023 | Honesdale | PA | 18431 | (570) 253-6100 | (570) 253-7255 | ||
| American Technology Systems Inc | 1932 Orange St | Berwick | PA | 18603 | (570) 752-7141 | (570) 752-2871 | ||
| Triguard Inc | 1021 Main St | Avoca | PA | 18641 | (570) 456-0300 | www.triguards.com | ||
| C-K Alarm Systems | 64 Loop Rd | Mountaintop | PA | 18707 | (570) 474-6563 | (570) 474-6710 | www.c-kalarm.com | |
| Tilley Fire Equipment | 280 N Broad St | Doylestown | PA | 18901 | (215) 345-8066 | (215) 345-9357 | ||
| CW Security Service | PO Box 131 | Dublin | PA | 18917 | (215) 489-2600 | www.cwsecurityservice.com | ||
| Warrington Alarm Co Inc | PO Box 3099 | Warminster | PA | 18974 | (215) 442-1100 | (215) 442-1912 | www.warringtonalarm.com | |
| Security On-Line Systems Inc | 22 E Mount Pleasant Ave | Ambler | PA | 19002 | (215) 628-9190 | (215) 628-9168 | www.solsinc.com | |
| Main Line Protection Services LLC | 555 E City Ave | Ste 950 | Bala Cynwyd | PA | 19004 | (610) 668-0308 | www.mainlineprotection.com | |
| Universal Atlantic Systems Inc | 700 Abbott Dr | Broomall | PA | 19008 | (610) 328-1000 | (610) 328-2000 | www.uas.com | |
| NTI Security | PO Box 203 | Broomall | PA | 19008 | (610) 353-9388 | (610) 359-9384 | www.ntisecurity.com | |
| Beacon Security Systems LLC | 755 Burdette Dr | Aston | PA | 19014 | (610) 228-4612 | (610) 643-7886 | www.beaconsecurity.net | |
| Sentry One Security LLC | 142 Holme Ave | Elkins Park | PA | 19027 | (877) 398-8252 | (215) 774-1254 | www.sentryonesecurity.com | |
| Girsh Alarm Company Inc | PO Box 29780 | Elkins Park | PA | 19027 | (215) 782-9911 | (215) 635-9808 | www.girshalarm.com | |
| JASS Security Systems | PO Box 176 | Hatboro | PA | 19040 | (215) 441-5277 | (215) 441-9366 | www.jasssecurity.com | |
| Custom Alarm Services | 1289 Arbutus Ave | Langhorne | PA | 19047 | (215) 752-9777 | (215) 547-7777 | ||
| Richard N Best Associates Inc | 15 Trail Rd | Levittown | PA | 19056 | (215) 945-9240 | (215) 945-9277 | www.rnbest.com | |
| Advent Security Corp | 101 Roesch Ave | Oreland | PA | 19075 | (215) 576-7111 | (215) 576-7852 | ||
| Main Line Security Co | 406 Parkview Dr | Wynnewood | PA | 19096 | (610) 971-9710 | (610) 795-7385 | www.mainlinesecurity.com | |
| Robotek Security Systems | PO Box 42797 | Philadelphia | PA | 19101 | (215) 765-2000 | (215) 765-2100 | ||
| Sure Guard Inc | 57 Plank Ave | Paoli | PA | 19301 | (610) 651-0800 | (610) 651-4943 | ||
| Automated Security Corp | 321 W Uwchlan Ave | Ste B | Downingtown | PA | 19335 | (610) 873-0067 | (610) 873-0068 | www.automatedsecuritycorp.com |
| The Protection Bureau | 197 Philips Rd | Exton | PA | 19341 | (610) 903-4900 | (610) 903-4979 | www.pbureau.com | |
| Eagle Security and Electrical Services Ltd | 500 N Walnut Rd | Kennett Square | PA | 19348 | (610) 444-3388 | (610) 444-5860 | ||
| Chesco Security Inc | PO Box 642 | Kennett Square | PA | 19348 | (610) 268-3922 | (610) 268-3924 | ||
| Protection One Alarm Monitoring Inc | 2490 Blvd of the Generals | Norristown | PA | 19403 | (610) 539-6894 | (610) 539-3813 | www.protectionone.com | |
| Independence Security LLC | 960 Rittenhouse Rd | Valley Forge Corporate Center | Norristown | PA | 19403 | (484) 398-0434 | (215) 689-2839 | www.isllc-security.com |
| Hefline Company LLC | 650 Sentry Park | Blue Bell | PA | 19422 | (215) 233-1800 | (215) 641-1777 | www.hefline.com | |
| Hi-Tech Electric LLC | 115 Sunset Dr | Harleysville | PA | 19438 | (215) 256-6276 | (215) 256-6429 | www.hi-techelectricllc.com | |
| American Security Corporation | 3311 Unionville Pike | Hatfield | PA | 19440 | (215) 822-0700 | (215) 822-5506 | www.americansecuritycorporation.com | |
| Alarm Tech Systems | 2670 Leisczs Bridge Rd | Unit 200 | Leesport | PA | 19533 | (610) 916-1090 | (610) 916-0899 | www.alarmtechsys.com |
| Electronic Security Protection | 1854 Reading Blvd | Wyomissing | PA | 19610 | (610) 775-1666 |