PoE (Power over Ethernet) refers to a power over Ethernet technology that simultaneously transmits power and data through a twisted pair cable. The application of this technology can effectively improve the stability and flexibility of the network, so it is widely favored by people. At present, there are various applications based on PoE technology on the market, such as Gigabit PoE switches, PoE power supplies, PoE splitters, and so on. 

Outdoor PoE Injector POE++ 60/90w 802.3af/at

What is a PoE injector?

PoE injector is also called midspan, PoE charger or PoE adapter. It connects non-PoE switches and PoE powered devices (PD) through network cables (such as Cat5eCat6Cat6a, etc.) working.  This equipment is generally suitable for places that need to install low-power terminal equipment but lack power outlets. This solution effectively achieves a great improvement in network flexibility at a lower cost, so that equipment installation is no longer restricted by geographical and existing network architecture.

The advantages of PoE injector are mainly reflected in the following aspects:
*Easy to install: Just connect the power supply to the PoE terminal equipment and the switch to provide power and data transmission support.
*Easy to expand: The data signal output by the non-PoE switch can be injected into the power signal through the network cable, so as to provide the power and data transmission support for the powered device at the same time, which brings more convenience to the device connection.
*Save expenses: The use of PoE power supply can keep the original network architecture on the basis of effective use of the original equipment, thus greatly saving expenses.

PoE injector type:

Standard PoE Power Supply & Non-standard PoE Power Supply

Standard PoE power supply refers to a power supply that complies with PoE industry standards (such as IEEE802.3af, IEEE802.3at or the latest IEEE802.3bt standard).  Under the PoE industry standard of 802.3af, 802.3at or 802.3bt, the PoE power supply equipment (PSE) and the powered device will automatically negotiate when they are connected, and the negotiation can be successful only when the devices at both ends conform to the same standard mode. After the negotiation between the two devices is successful, the power supply device will supply power to the powered device. In this working mode of standard PoE technology, the safety of PoE equipment can be strongly guaranteed. Generally, the 802.3af, 802.3at or 802.3bt standard power supply voltage is 44-57V (DC).

Non-standard PoE power supplies generally refer to power supplies that do not comply with any PoE industry standards (such as IEEE802.3af, IEEE802.3at or IEEE802.3bt standards). The operating voltage of non-standard PoE equipment is generally 18-48V (DC). If the voltage values of the two connected devices do not match, it may cause permanent damage to the device.

12V/24V/48V PoE power supply

PoE power supply can be divided into three types according to the output voltage: 12V, 24V and 48V. When purchasing a PoE power supply, you need to consider whether the voltage of the PoE device connected to it is consistent. 

In addition to the above-mentioned two categories of power supply, PoE Injector can also be divided according to the number of different ports, such as single-port PoE power supply and eight-port PoE power supply and so on.