Commercial Security Directory & Research Library
Research physical-security companies and prepare better commercial and industrial projects. The Pennsylvania security company directory contains 88 researched provider and brand entries with published services, locations, business phone numbers where verified, and official source links.
Updated October 28, 2026. Browse eastern, central and western Pennsylvania, or search by company, city and service. The collection is expanding and is not a complete census. NERSA is affiliated with this resource and is listed alongside competing providers; the directory is not an independent ranking or credential-verification service.
Browse the Pennsylvania directory · NERSA company profile · Suggest a correction or company for review
Start with the operating problem
Before selecting cameras, alarm panels or access-control software, identify the property type, work schedule, tenant boundaries, existing equipment and the incidents or operations the system must support. Record where staff need an overview and where they need identification-quality footage, controlled entry, an alarm signal or a clear response workflow.
Inventory what is already installed. Useful existing network cabling, fiber, readers and cameras may be retained if they meet the new specification and can be serviced. Avoid replacing functioning infrastructure without testing its condition and verifying manufacturer support.
Research the major building-security decisions
Video surveillance and recorded evidence
Camera systems should be selected according to lens, viewing distance, lighting, exposure, resolution at the target and the intended evidence. Recording design should include retention, exports, network capacity and resilience. Begin with the commercial camera site-survey checklist or the video surveillance proposal comparison worksheet.
AI video alerts and recognition
Video analytics can help operators review selected events, but performance should be measured in the actual environment. Specify event criteria, night and weather conditions, missed detections and false notifications before approving a deployment. See the AI analytics pilot and evaluation checklist.
Access control, intrusion and integration
Define door permissions, staff offboarding, alarm zones, monitored event responses, responsible departments and system ownership. Separate fire and egress requirements from convenience programming. The integration acceptance-testing guide and integration coordination reference help explain the evidence needed at commissioning.
Risk assessment and phased modernization
Prioritize upgrades using the documented operating risk and the consequence of losing a useful security function. A project can be phased if each phase maintains a workable level of protection. See the commercial security risk-assessment guide and video modernization and retention guide.
How to compare project proposals
- List the current problem and the outcome required at each location.
- Ask for specific model numbers, software subscriptions, equipment schedules and included installation work.
- Clarify who supplies network ports, fiber or copper pathways, power, permits and access to occupied spaces.
- Require a plan for existing-equipment reuse, outage contingencies and protecting operations during cutover.
- Include acceptance tests for camera recordings, alarms, door permissions, export workflows and communications failures.
- Obtain drawings, account ownership, service contacts, warranties and staff training at handover.
Understanding older information on this site
Some URL addresses and articles originated in an older commercial directory and local-news archive. The educational material may explain historical camera projects and technology concepts, but old business profiles are not current endorsements, certifications or evidence of availability. Validate regulations, manufacturer capabilities and local conditions with current sources and the qualified parties responsible for the work.
The security terminology glossary may help with unfamiliar terms. For current commercial and industrial security design, installations and upgrades, consult NERSA’s commercial and industrial security services.