Knowledge Base
Security Insights &
Technical Resources.
Deep dives, case studies, and engineering guides from the ZEI technical team.
Compliance Guides
The 2025 Guide to NERC CIP-014 Physical Security Mandates
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System Architectures
Thermal vs. Optical: Choosing the Right Sensor for Substations
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Case Studies
Stopping Copper Theft: How Radar-Based Detection Cut Substation Losses by 98%
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System Architectures
Integrating Legacy SCADA with Modern VMS
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Engineering Blog
Server Room Cable Management 101
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Engineering Blog
The End of Keycards?
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Compliance Guides
NDAA Compliance Explained
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Engineering Blog
The 3-2-1 Backup Rule
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Engineering Blog
Fiber vs Copper ROI
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How-to Videos
Setting Up a VMS from Scratch
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General
Global Logistics Hub: 5M sq ft Secured
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General
Bandwidth Calculator: How Much Do You Need?
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General
Cybersecurity Best Practices for IP Cameras
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Engineering Blog
Power over Ethernet Budget Planning for Enterprise Security Systems
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Engineering Blog
Grounding and Bonding Best Practices for Low-Voltage Installations
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Compliance Guides
NEC Conduit Fill: The Integrator's Reference for Low-Voltage Pathways
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System Architectures
Edge AI Analytics: Moving Intelligence from the Server to the Camera
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Engineering Blog
Surge Protection Design for Outdoor Low-Voltage Infrastructure
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System Architectures
OSDP: Why Wiegand Is Dead and What Replaces It
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Engineering Blog
Field Termination vs. Fusion Splicing: A Contractor's Decision Guide
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Engineering Blog
UPS Sizing and Battery Runtime Calculations for Security Infrastructure
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Engineering Blog
Why Megapixels Lie: The Truth About Camera Resolution and Forensic Value
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Compliance Guides
In-Building DAS: Meeting Fire Code Signal Strength Requirements
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System Architectures
Designing the Network Backbone for a 500+ Camera Deployment
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Compliance Guides
Firestopping Penetrations: The Requirement Nobody Gets Right
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System Architectures
Hybrid Cloud Video Storage: Balancing Retention, Bandwidth, and Cost
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Case Studies
System Commissioning: The Phase That Separates Professionals from Installers
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Engineering Blog
EMI and Crosstalk: Diagnosing Signal Degradation in Low-Voltage Runs
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