Security Camera System Buying Guide
Understanding the Different Types of Security Camera Systems
There is no single security camera system that is right for every property. The best choice depends on the building, camera locations, existing wiring, required image quality, recording needs and plans for future expansion. Understanding the different types of security camera systems can help you choose equipment that provides dependable surveillance without paying for technology you do not need.
Professional systems generally fall into three major groups: IP security camera systems using network cameras and NVRs, HD CCTV camera systems using coax cable and DVRs, and wireless camera systems. Within those categories, you can choose different resolutions, camera styles, night-vision technologies, storage capacities and intelligent video features.
1. IP Security Camera Systems
An IP security camera system uses network cameras that transmit digital video over Ethernet. The cameras communicate with a network video recorder, commonly called an NVR, which manages the cameras and stores recorded surveillance footage on installed hard drives.
IP camera systems are a strong choice for new installations because they support high-resolution cameras, scalable system designs, intelligent video features and straightforward expansion. They are commonly used by businesses, warehouses, retail stores, offices, schools, government properties and homeowners looking for professional wired surveillance.
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2. PoE Security Camera Systems
A PoE security camera system is a type of IP camera system that uses Power over Ethernet. A compatible Ethernet cable can carry network data and electrical power to the camera, reducing the need for a separate power connection at each camera location.
PoE is particularly useful for permanent surveillance installations because it combines wired network reliability with a clean camera connection. CAT5e or CAT6 cabling is commonly used between the cameras and compatible PoE recording or network equipment.
3. NVR Security Camera Systems
An NVR camera system records compatible IP cameras. The network video recorder provides centralized video storage, camera management, playback and supported remote access.
NVR systems can be configured for continuous recording, motion-based recording or other supported recording schedules. Local hard-drive storage also allows professional surveillance systems to operate without requiring a cloud-storage subscription for standard recording.
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4. CCTV Security Camera Systems
Modern CCTV security camera systems can transmit high-definition surveillance video over coaxial cable. These HD-over-coax systems are especially useful when upgrading an existing property that already has usable coax camera wiring.
Instead of replacing existing cable with Ethernet, compatible HD CCTV cameras can connect to a DVR using coax infrastructure. This can make CCTV systems an efficient option for upgrading older analog surveillance installations while retaining a familiar wired architecture.
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5. DVR Security Camera Systems
A DVR is the recording platform commonly used with HD-over-coax security cameras. Cameras connect to the digital video recorder, where surveillance footage is processed, recorded and stored on local hard drives.
DVR security camera systems remain useful for properties with existing coax infrastructure and for installations where replacing that cable with Ethernet would provide little practical benefit.
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6. Wireless Security Camera Systems
Wireless security cameras can be useful when running network cable is difficult or when a location requires more flexible camera placement. Depending on the equipment, video transmission may rely on a wireless network while the camera still requires an appropriate source of power.
For permanent or critical surveillance, it is important to consider Wi-Fi coverage, interference, bandwidth and distance before selecting a wireless system. Wired IP or CCTV systems are generally preferred when consistent 24/7 connectivity and long-term recording are the priority.
IP vs. CCTV Security Camera Systems: Which Is Better?
For a new installation, an IP/PoE system is usually the preferred starting point. For a property with good existing coax cable, an HD CCTV system can provide a cost-effective upgrade without requiring the building to be rewired. Both can provide professional wired surveillance and local video recording when properly designed.
Choose IP / PoE When...
You are installing a new system, want a network-based platform, need easy future expansion, or want professional high-resolution IP cameras.
Choose HD CCTV When...
Your property already has usable coax cable and you want to upgrade the cameras and recorder without completely rewiring the surveillance system.
Consider Wireless When...
Running data cable is difficult or impractical and the location has the network coverage needed to support wireless video reliably.
Types of Security Cameras Within a Camera System
After choosing the system technology, the next step is selecting the right security cameras for each location. A single system can use different compatible camera styles to provide the right field of view for entrances, parking areas, hallways, offices, warehouses and property perimeters.
Bullet Cameras
Excellent for visible outdoor surveillance and directional coverage.
Dome & Turret Cameras
Compact designs for indoor or outdoor coverage depending on the camera.
PTZ Cameras
Pan, tilt and optical zoom capabilities for monitoring larger areas.
Specialty Cameras
Options can include panoramic, license-plate, active-deterrence and other specialized cameras.
4K and High-Resolution Security Camera Systems
Resolution determines how much image information a security camera can capture. Higher-resolution cameras can provide greater detail, particularly when reviewing recorded footage. Professional systems can support different resolutions depending on the camera and recorder combination.
A 4K security camera system uses cameras capable of approximately eight-megapixel video and a compatible recorder capable of handling the corresponding video resolution and storage requirements.
Business, Commercial and Home Security Camera Systems
The technology may be similar, but the design of a security camera system should match the property. Businesses may need cameras covering entrances, registers, inventory, loading areas, parking lots and building perimeters. Warehouses and larger commercial properties may require additional cameras, longer cable runs and greater recording capacity.
Home security camera systems may focus on driveways, doors, garages, yards and exterior access points. In either environment, selecting the correct camera locations and recorder capacity is just as important as choosing the camera technology.
Security Camera System FAQs
What are the main types of security camera systems?
The major categories include IP/PoE camera systems with NVR recording, HD-over-coax CCTV systems with DVR recording, and wireless camera systems.
What is the best type of security camera system?
For many new professional installations, an IP/PoE system is an excellent choice because of its wired connectivity, high-resolution camera options, NVR recording and expandability. Existing coax installations may be better suited to an HD CCTV upgrade.
What is the difference between an NVR and a DVR?
NVRs are generally used with network-based IP cameras, while DVRs are commonly used with HD-over-coax CCTV cameras.
Are wired security camera systems better than wireless?
Wired systems are generally preferred for permanent professional surveillance because camera connectivity does not depend on Wi-Fi signal conditions. Wireless cameras can still be useful in locations where cabling is difficult.
Do security camera systems require monthly fees?
Professional systems with local NVR or DVR recording can store surveillance video locally without requiring a monthly cloud-storage subscription for standard recording.
How many security cameras do I need?
The correct camera count depends on the property and the areas that need coverage. Entrances, parking areas, driveways, interior spaces and building perimeters should be evaluated individually before choosing a recorder size.
Can I add more security cameras later?
Yes, when the recorder has unused channels and sufficient capacity. Planning for future expansion when selecting the NVR or DVR can make adding compatible cameras easier later.
Not Sure Which Security Camera System Is Right for You?
Tell us about your property, existing wiring, areas you need to monitor and recording requirements. We can help you compare IP, PoE, NVR, HD CCTV, DVR and wireless options.
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