Shenzhen LS Vision Technology Co., Ltd.
Shenzhen LS Vision Technology Co., Ltd.
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What's the advantage of PoE?
Source: LS VISION
Date: 2016/11/16
What's the advantage of PoE?
1. Simple cabling, reduce installation cost Centralized power supply, one network cable can transmit data and power supply, PoE enables network devices no longer require extra power supply, greatly reduce the installation cost and time.

2. Safe and convenient Power Sourcing Equipment only provides power supply to PoE-enabled devices. For example, PoE switch only transmit power supply when it detects the connection of PoE-enabled devices. This can avoid the risk of leakage. Users can mix use existing non-PoE device and PoE-enabled devices, both of them can co-exist.

3. Convenient for maintenance Similar to data transmission, PoE can be managed through Simple Network Management Protocol (SNMP). This function can offer shut down at night, remote reset etc functions.Simple Network Management Protocol (SNMP) is a popular protocol for network management. It is used for collecting information from, and configuring, network devices, such as servers, printers, hubs, switches, and routers on an Internet Protocol (IP) network.

How to Choose POE Switch?
1. Power consumption of IP camera: PoE network switch adopts different standards, the output power is also different. For example, IEEE802.3af can support powered devices that don't exceed 15.4W. As cable transmission will consume power, IEEE802.3af can provide power supply to powered devices that don't exceed 12.95W. According to IEEE802.3at standard, IEEE802.3at PoE switch can work with powered devices that don't exceed 25W.

2. Max. support powered devices: PoE switch has an important parameter - total power. Under IEEE802.3af standard, If 24CH PoE switch's total power reaches 370W, then each ports can get sufficient power (370/15.4=24), but if based on IEE802.3at standard, each port supports 30W, the PoE switch only can provide power supply to 12 ports (370/30=12).
3. Required quantity of ports, whether having Optical Fiber port, or network management, bandwidth (10/100/1000M).
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