Introduction: POE security camera, also known as Ethernet powered security camera, is a network camera that provides both power and data transmission through standard Ethernet cables. Users do not need to install a separate power adapter for the camera, only one Ethernet cable is needed to achieve normal operation of the camera. This design simplifies wiring, reduces installation costs, and makes deployment of the monitoring system more convenient.

Working principle
The core of POE technology is to supply power to devices through non data transmission lines (usually 56 and 78 pins) of Ethernet cables. This power transmission method follows the IEEE802.3af and IEEE802.3at standards, ensuring the security and stability of power transmission. For POE security cameras, they can utilize existing network infrastructure without the need for additional power cords, simplifying the installation process.

Advantage
1. Easy installation: No need to lay a separate power cord, only one network cable is needed for installation, saving time and cost, and reducing wiring workload.
2. Low cost: Due to the absence of additional power cords and adapters, the overall cost is relatively low, which can significantly reduce wiring costs in large-scale projects.
3. High flexibility: The Ethernet cable can simultaneously transmit data and power, allowing the camera to be installed in various environments without power restrictions, making it easy to deploy.
4. Easy to expand: It can be easily compatible with existing network devices, making it easy to expand and upgrade the system.
5. High security: POE technology has overload protection and short circuit protection functions, improving the safety performance of cameras, and can be remotely managed and maintained through network switches without on-site access.
6. Space saving: Reduced the amount of cables used, making the monitoring environment cleaner.

Application scenarios
POE security cameras are widely used in various monitoring scenarios, including but not limited to home security, commercial surveillance, public safety, and industrial automation. In a home environment, it can be easily installed in every corner, providing comprehensive security monitoring; In commercial settings, it can be used to protect the safety of employees and property, and improve work efficiency; In the field of public safety, it can be used for street monitoring, parking lot management, etc., to enhance the level of urban safety; In the field of industrial automation, it can be used for production process monitoring, equipment status monitoring, etc., to ensure production efficiency and product quality.

Selection precautions

1. Resolution: Choose the appropriate resolution based on monitoring requirements, as high-resolution cameras provide clearer images.
2. Lens focal length: The longer the focal length, the wider the monitoring range, but the details at close range may not be obvious, and the appropriate focal length should be selected according to the actual monitoring scene.
3. Night vision capability: Choose a camera with infrared night vision function to ensure night monitoring effectiveness.
4. Transmission distance: Considering the transmission distance of POE power supply, ensure that the distance between the camera installation location and the network switch meets the requirements, generally not exceeding the specified maximum value (usually 100 meters).
5. Brand and after-sales service: Choose a trustworthy brand, such as Hikvision, Dahua Corporation, Keda, Yushi, etc. on the market, while considering after-sales service to avoid problems that cannot be solved in a timely manner in the later stage.
6. Security: Choose POE cameras with good security protection mechanisms to prevent data leakage and system attacks.