Start here
How to Choose the Right Security System for Your Home and Business
A step-by-step framework for matching a security system to your property: assess risks and entry points, set a budget, and list must-have features first.
Security guide
Understand your security system, before you buy it.
Independent explainers on alarms, cameras, access control, monitoring and upkeep for homes and small businesses.
149 in-depth guides 17 topics Nov 2026 latest guide
Featured guides
Guides to start with
Each one links on to more specific articles in its topic.
Home and Business Security Systems: A Guide to Choosing the Right Equipment
A plain tour of the hardware in a security system, from control panels and sensors to cameras, sirens and keypads, and how to decide what a site needs.
The Role of Motion Detectors in Home and Business Security Systems
How motion detectors work, from passive infrared to dual-technology models, where to place them, how pets are handled and what usually causes false alarms.
The Role of Surveillance Cameras in Home and Business Security
What surveillance cameras actually do in a security system: deterrence, verification and evidence, where they fall short, and the privacy rules to check first.
How to Prevent Burglary with a Home and Business Security System
A practical look at the layers that commonly reduce break-in risk, from doors and lighting to sensors and monitoring, and why no system can promise prevention.
Browse
Explore by topic
Choosing a System
Compare needs, providers and equipment before you commit.
Choosing a System Selection criteria and questions to ask for different properties and providers. 8 guides Equipment and Hardware The kinds of devices in a system and how to compare them. 8 guides Locks and Entry Points Doors, locks, keypads and the weak points of a building. 10 guides Planning and Budgeting Assessing risk, setting a budget and reading contracts. 10 guides
Detection and Protection
How sensors, cameras and monitoring guard against common risks.
Detection and Sensors Motion, fire, environmental and audio devices and what each does. 8 guides Cameras and Identity Video, analytics and ways to confirm who is who. 8 guides Protecting Property Reducing risk from burglary, fire and water with realistic expectations. 6 guides Alarm Response and Signals What happens when an alarm trips and how to cut false alarms. 10 guides Video Recording and Storage Recorders, retention, placement and image quality. 9 guides
Smart Features and Upkeep
Connected features, maintenance and the rules around them.
Securing Specific Places
Security thinking for apartments, businesses, grounds and entry points.
Daily Habits and Rules
Routines, privacy and planning that keep a system useful over time.