Knowledge Base

Security Insights &
Technical Resources.

Deep dives, case studies, and engineering guides from the ZEI technical team.

The 2025 Guide to NERC CIP-014 Physical Security Mandates
Compliance Guides

The 2025 Guide to NERC CIP-014 Physical Security Mandates

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Thermal vs. Optical: Choosing the Right Sensor for Substations
System Architectures

Thermal vs. Optical: Choosing the Right Sensor for Substations

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Stopping Copper Theft: How Radar-Based Detection Cut Substation Losses by 98%
Case Studies

Stopping Copper Theft: How Radar-Based Detection Cut Substation Losses by 98%

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Integrating Legacy SCADA with Modern VMS
System Architectures

Integrating Legacy SCADA with Modern VMS

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Server Room Cable Management 101
Engineering Blog

Server Room Cable Management 101

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The End of Keycards?
Engineering Blog

The End of Keycards?

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NDAA Compliance Explained
Compliance Guides

NDAA Compliance Explained

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The 3-2-1 Backup Rule
Engineering Blog

The 3-2-1 Backup Rule

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Fiber vs Copper ROI
Engineering Blog

Fiber vs Copper ROI

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Setting Up a VMS from Scratch
How-to Videos

Setting Up a VMS from Scratch

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Global Logistics Hub: 5M sq ft Secured
General

Global Logistics Hub: 5M sq ft Secured

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Bandwidth Calculator: How Much Do You Need?
General

Bandwidth Calculator: How Much Do You Need?

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Cybersecurity Best Practices for IP Cameras
General

Cybersecurity Best Practices for IP Cameras

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Power over Ethernet Budget Planning for Enterprise Security Systems
Engineering Blog

Power over Ethernet Budget Planning for Enterprise Security Systems

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Grounding and Bonding Best Practices for Low-Voltage Installations
Engineering Blog

Grounding and Bonding Best Practices for Low-Voltage Installations

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NEC Conduit Fill: The Integrator's Reference for Low-Voltage Pathways
Compliance Guides

NEC Conduit Fill: The Integrator's Reference for Low-Voltage Pathways

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Edge AI Analytics: Moving Intelligence from the Server to the Camera
System Architectures

Edge AI Analytics: Moving Intelligence from the Server to the Camera

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Surge Protection Design for Outdoor Low-Voltage Infrastructure
Engineering Blog

Surge Protection Design for Outdoor Low-Voltage Infrastructure

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OSDP: Why Wiegand Is Dead and What Replaces It
System Architectures

OSDP: Why Wiegand Is Dead and What Replaces It

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Field Termination vs. Fusion Splicing: A Contractor's Decision Guide
Engineering Blog

Field Termination vs. Fusion Splicing: A Contractor's Decision Guide

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UPS Sizing and Battery Runtime Calculations for Security Infrastructure
Engineering Blog

UPS Sizing and Battery Runtime Calculations for Security Infrastructure

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Why Megapixels Lie: The Truth About Camera Resolution and Forensic Value
Engineering Blog

Why Megapixels Lie: The Truth About Camera Resolution and Forensic Value

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In-Building DAS: Meeting Fire Code Signal Strength Requirements
Compliance Guides

In-Building DAS: Meeting Fire Code Signal Strength Requirements

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Designing the Network Backbone for a 500+ Camera Deployment
System Architectures

Designing the Network Backbone for a 500+ Camera Deployment

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Firestopping Penetrations: The Requirement Nobody Gets Right
Compliance Guides

Firestopping Penetrations: The Requirement Nobody Gets Right

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Hybrid Cloud Video Storage: Balancing Retention, Bandwidth, and Cost
System Architectures

Hybrid Cloud Video Storage: Balancing Retention, Bandwidth, and Cost

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System Commissioning: The Phase That Separates Professionals from Installers
Case Studies

System Commissioning: The Phase That Separates Professionals from Installers

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EMI and Crosstalk: Diagnosing Signal Degradation in Low-Voltage Runs
Engineering Blog

EMI and Crosstalk: Diagnosing Signal Degradation in Low-Voltage Runs

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