Guide to PoE Cameras: the definition, types and key considerations

What is a PoE camera system?

A PoE camera system is a type of video security installation that uses Power over Ethernet technology to receive power and send data over a single Ethernet cable. Older CCTV solutions and some Internet Protocol (IP) video security systems require two separate cables to function; one to send power to each camera and another to transmit recorded data.

Power over Ethernet cameras help organizations streamline installation and maintenance processes by reducing the number of components required to develop effective installations. Under a PoE system, teams simply need to install selected cameras and run a single cable between each unit and a centralized Network Video Recorder (NVR) to monitor CCTV feeds.

How do PoE cameras work?

In short, PoE security cameras work by recording and encoding live footage internally, then sending that data to an NVR via a single Ethernet cable to be stored and viewed on external devices. That same Ethernet cable is also used to send power to PoE cameras, with modern systems able to transmit data both over the internet and as part of a closed internal network.

To develop an effective PoE security camera installation, five key components will be required:

• Power over Ethernet cameras - PoE cameras are a type of IP camera designed to use Ethernet cables for both data transmission and electrical power, while all PoE cameras are IP cameras, not all IP cameras are designed to work in a PoE system.

• An NVR unit - Network Video Recorders are mass storage devices designed to receive recorded and processed video footage via Ethernet cables. NVRs differ from DVRs in that they cannot process raw video information or analog footage internally.

• Ethernet cables - Ethernet cables are wired computer networking cables designed to send data between installed cameras and a linked NVR unit. Most PoE systems require the use of CAT5 or CAT6 Ethernet cables to send power and transmit data.

• External PoE switches - External PoE switches may be required if leaders decide running Ethernet cables directly between NVRs and PoE cameras is not logistically possible; these switches enable teams to install systems using less physical cabling.

• A monitoring solution — A TV or computer monitor can be connected to the NVR to allow on-site staff to view live video feeds. Additional remote monitoring solutions can also be developed so teams can view live footage 24/7 from any secure smart device.

Main differences between PoE and IP cameras

While there are several similarities between IP and PoE cameras, it’s important to note the key differences between these two technologies. The first thing to know is that all PoE cameras are IP cameras, but not all IP cameras work in PoE installations.

All IP camera types can send and receive data over the internet, record video footage in a digital format and process recorded footage internally before sending that data to an NVR for storage and viewing purposes. However, only PoE security cameras can send data and receive power over a single Ethernet cable within a functional installation.

WiFi cameras vs PoE cameras

Some IP cameras can send video footage over a secure WiFi connection to create wireless CCTV systems. These solutions can be effective when installing physical wires is deemed too costly or logistically difficult, though some issues are worth considering.

Primarily, WiFi communications can be susceptible to interference from wider technological devices and are generally considered more vulnerable to cyber attacks. WiFi cameras differ from PoE cameras because they require an individual power supply. 

Analog cameras vs PoE systems

Analog cameras are entirely distinct from any form of IP camera installation. These devices must be connected to individual power supplies and can only send data via separate coaxial cables. In addition, analog cameras cannot process video footage internally, so they must be connected to a Digital Video Recorder (DVR) rather than an NVR for footage to be encoded.

Common types of PoE camera hardware

PoE security cameras are a specific subdivision of IP cameras, but beyond that distinction, there are several different PoE camera models designed to suit various security and building management requirements. Below are a few examples of common PoE camera models that property owners might consider for use in different commercial and residential environments.

Benefits of PoE security camera systems

While both analog and standard IP cameras can offer some of the same operational benefits as PoE cameras, generally speaking, PoE systems are much simpler to design, install and maintain. Fewer components are required, less technical knowledge is necessary, and more functionality can be achieved. Below are some core benefits associated with PoE cameras.

Design flexibility

As PoE cameras receive power and send data using only Ethernet cables, they don’t need to be installed near electrical outlets. This affords teams much more flexibility in terms of potential camera placements. Additionally, if businesses decide their PoE cameras need to be moved at any time, relocation will only require the repositioning of individual Ethernet cables.

While Ethernet cables have a maximum operational limit of 328 feet, PoE extenders and PoE switches can be freely deployed to help property owners overcome this restriction. In an analog system, this can only be achieved by coupling or running entirely new coaxial cables.

Digital image quality

As a variation of an IP security camera system, PoE cameras capture footage digitally and encode images internally using built-in computer processors. This distinction enables PoE systems to record real-time footage at a much higher resolution than analog cameras, with no need for external video processing functions to be applied to recorded footage by an additional DVR solution.

Furthermore, digital video signals do not suffer the same signal loss or degradation problems as are common in analog systems. Analog signals will gradually lose quality as cable length increases; the same cannot be said for digital video signals. PoE camera units also benefit from digital zoom functionality, which doesn’t decrease image quality like optical zoom does.

Simple maintenance

Power over Ethernet camera systems are typically much easier to maintain than comparable analog CCTV solutions, as there are far fewer cables and hardware components to consider. Maintenance processes can be further simplified if organizations choose to develop entirely cloud-based camera systems, as such installations remove any need for physical recording devices.

In a cloud-based PoE system, captured footage is sent immediately to a cloud management platform for storage and viewing. This means only PoE cameras, cables and switches need to be physically maintained, with software managed through a Simple Network Management Protocol to centralize all network components in one interface for simple maintenance.

Power/​network reliability

In a traditional security camera system, multiple cameras will likely be powered by separate adapters attached to numerous wall outlets, increasing the number of individual mechanisms that could fail. Comparatively, PoE security cameras will all be powered from a single unified power source, leading to a far more reliable system that’s less vulnerable to power outages.

PoE cameras also communicate data over a hardwired internet connection, a configuration that’s considered to be far more reliable than any comparable WiFi-based systems. Ethernet cables are generally unaffected by factors like interference, crosstalk and signal degradation, making PoE security systems a great choice for consistent and reliable data communication.

Installation costs

PoE security camera systems can be more cost-efficient to install than conventional CCTV solutions, mostly because they require fewer components and less cabling. Additionally, as no electrical cabling will be required to power individual cameras, businesses will not need to hire certified electricians to install dedicated power cables, further reducing installation costs.

Simple scalability

If business needs change and additional PoE security cameras must be installed, doing so will only require the addition of extra network connections. This process is far less labor and resource-intensive than installing new electrical cabling, helping organizations keep costs down and affording teams the flexibility to adjust security systems in line with growth.

Where can PoE security camera systems be used?

PoE security camera systems can be used in several commercial and residential locations. Provided a secure Ethernet connection is available, business and property owners can create custom Power over Ethernet camera systems built to oversee indoor and outdoor operations, offering safety, security and logistical support to stakeholders across key industries.

Industry applications

Operating a bespoke PoE security camera system can benefit the industries below.

Commercial offices

Office building security cameras that utilize PoE technology have lower infrastructural requirements than standard CCTV systems, making them easy to install and maintain for owners of commercial buildings. As Power over Ethernet security cameras transmit footage over the internet, real-time footage can be accessed remotely, supporting remote and hybrid workflows for security and office workers.

With the addition of PoE switches, these camera systems can also be scaled easily to meet changing business demands. New PoE cameras can be easily added to the network to expand installations as required, with only one new cable installation required.

Warehouses

Warehouse cameras benefit from the simplified installation requirements of a PoE camera system, making this type of CCTV solution ideal for complex warehouse environments. This enables operators to install devices in areas where power access is limited. 

4K PoE security camera systems with night-vision and video analytics features can also help operators address common warehousing concerns, such as workplace safety incidents, internal and external theft and attempted burglaries at all hours.

Healthcare facilities

Hospital cameras using PoE technology enable caregivers and security teams to safeguard patients at all times. Multisensor and PTZ PoE security cameras allow operators to observe locations from multiple angles and follow incidents across expansive areas, with high-quality imaging helping teams spot concerns accurately. 

The ability to run Power over Ethernet cameras as part of a closed network can also help to defend against cyberattacks. Footage inside hospitals can contain Protected Health Information (PHI) and other sensitive data viewed as valuable to cybercriminals, making PoE IP camera systems beneficial for safety and compliance maintenance.

Apartment complexes

Apartment building security cameras powered by PoE can be installed around apartment buildings and communal areas to help security teams safeguard residents and provide property management support. PoE IP cameras can be installed in areas where standard power supplies aren’t available and viewed remotely to help teams address incidents 24/7.

Independent networks of PoE IP cameras across multiple properties can also be linked to a central management system, enabling operators to simplify management operations across all sites. The best PoE security camera systems can be easily scaled as required, with new devices added or integrated into wider systems with minimal infrastructural requirements. 

Schools and colleges

Power over Ethernet security cameras are well-utilized in educational institutions, with their ability to transmit power and data over a single cable enabling them to be easily installed in complex locations. The best PoE outdoor school security cameras with impact and weather-resistant housings help improve perimeter security 24/7, deterring common risks like break-ins and vandalism.

Retail stores

PoE security camera systems can be valuable loss prevention tools in retail environments. They provide managers and security teams with a holistic view of the property at all times. Retail cameras can be viewed remotely and enhanced using video analytics software to improve situational awareness and automatically spot suspicious activities, helping to protect assets and people.

As a PoE IP camera system transmits data over the internet, retail deployments can also be linked to cloud management systems, allowing for integrations between cameras and wider security devices. Store owners can use data from PoE cameras to trigger alarms, remote alerts and access control door locks, helping to improve response times to common threats.

Environmental applications

PoE security camera systems are suitable for indoor and outdoor applications, however, they differ slightly in terms of features and functionality. Therefore, operators must select the best PoE IP camera type for their desired use cases.

Indoor environments

An indoor PoE camera will usually be smaller and more discreet than a model designed for outdoor use. This is because the casings do not require as much environmental protection. PoE indoor cameras are commonly used to secure coverage over commercial spaces like offices, retail stores, schools and warehouses, but they are unsuitable for outdoor use.

Outdoor environments

PoE outdoor security cameras have hard-wearing casings built to withstand direct impacts, harsh temperatures, dust and water ingress and high winds, enabling them to be effectively used in outdoor environments. By installing a PoE camera outdoors, property owners can improve perimeter security and deter criminality, provided devices are well-positioned and maintained.

PoE outdoor security cameras often have built-in low-light and night-vision features to produce high-quality images in all light conditions. They are commonly used to cover building perimeters, parking lots and for work environments like construction sites, oil rigs and transport facilities.

What to look for in an effective PoE camera system

Choosing an effective PoE security camera system will require teams to assess the unique needs of their organization. Camera placements, features and potential functionality will all need to be examined in relation to business needs. Below are some key points to consider.

1. Image quality

Image quality will greatly affect the efficacy of active PoE security camera systems; however, as image quality rises, so do related storage requirements. PoE IP cameras typically use Mega Pixel (MP) ratings to reflect expected video resolutions, the three most common being:

• 2MP — 1080p

• 4MP — 2K

• 8MP — 4K

It’s recommended that businesses use a variety of resolutions in their systems to keep costs and storage requirements within reasonable limits. For example, 8MP — 4K cameras may be used to cover entrances and exits where capturing detailed images of potential intruders will be required, while areas where detail is less important may be covered by lower resolutions.

2. PoE standards

There are multiple PoE standards that outline how much power can be safely sent through a PoE system. The original IEEE 802.3af-2003 PoE standard provides up to 15.4 W of power to each port, while the updated IEEE 802.3at-2009 PoE standard (AKA PoE+) provides up to 30 W of power. Most PoE cameras will require the updated PoE+ standard to work correctly.

3. Coverage

Security buyers need to consider the layout of areas they intend to monitor using PoE cameras. Use wide-angle dome or PTZ models to cover open spaces like shop floors and office areas, while long-range bullet PoE cameras should be used to cover larger areas like parking lots.

4. Remote viewing

To ensure PoE security camera systems provide 24/7 property protection, installing systems with remote viewing functionality is recommended. Look for PoE cameras that feature user-friendly software designed to be viewed remotely via a secure mobile app or cloud management system, as well as those that include end-to-end encryption to ensure communications are cybersecure.

5. Integration capabilities

Finally, consider the potential for wider integrations with existing or new security technologies. PoE cameras that can be connected to wider cloud management systems may be able to be linked to broader security tools like access control readers, sensors and alarms, as well as smart video analytics software that can be used to program automated responses.

The best PoE security cameras for your business

The best PoE security cameras feature 4K resolution and other advanced features such as AI analytics, high-level zoom and built-in IR. For organizations interested in deploying the best PoE surveillance camera system, the following solutions are recommended for various applications:

Conclusion

PoE security camera systems can provide business and property owners with a reliable, cost-effective and easily maintained physical security solution to protect key assets from common threats. Provided teams choose camera models well-suited to key locations, ensure related storage and viewing systems are appropriately configured and develop solutions with future integration possibilities in mind, PoE cameras can be used to improve commercial security system installations.