Plug the Ethernet cable into the PoE injector’s PoE/Data Out port, then connect the other end of the cable to the IP camera’s PoE port.Make sure all video and network configurations are made before mounting the IP camera.Test to make sure the IP camera, PoE injector, and the IP camera’s management work properly.You will need the following equipment: an IP camera, a PoE injector, a standard network switch, and Cat5e, Cat6, or Cat6a Ethernet cabling.Let’s continue to use the example of an IP security camera.
In addition, they can also be typed by the number of ports they have (e.g., one-port PoE injectors, eight-port PoE injectors, etc.) How do you install a PoE injector? The voltage of a PoE injector must be taken into account as its voltage and the voltage standard of the PoE device must be compatible. 12 Volt, 24 Volt, and 48 Volt PoE Injectorsĭepending upon the output power voltage a PoE injector supplies, it is put into one of three types: 12V, 24V, or 48V. It is important to note that it may likely cause permanent electrical damage to the device if the wrong voltage is connected. Generally, passive PoE devices run on 18 to 48 volts. Passive PoE InjectorĪdopts PoE technology that does not conform to the 802.3at/af/bt standard is considered to use passive PoE. The typical 802.3at/af/bt PoE voltage is 44 to 57 volts (V) DC. During the initial handshake, if the PoE injector does not receive the proper acknowledgment, it will not power up, ensuring the device’s safety. Setting this up usually requires three devices: 1) a connection to the network (E.g., a router or a switch), 2) the PD, and 3) the PoE injector itself.Īre there different types? Active PoE InjectorĬonforms to the PoE standard of IEEE 802.3af, IEEE 802.3at, or IEEE 802.3bt is considered to use active PoE. If this port is not connected to the security camera, it will not power up and will not connect to the NVR/network. This port has two functions: 1) It delivers power to the IP security camera, and 2) it completes the network, so data is transmitted successfully. If this port is not connected to the security camera, the local network is unreachable. The Data In port connects the security camera to the local network, the NVR camera port, or a network switch. Let’s use the example of an IP security camera. Following is an overview of what each of these ports does. Typically, a PoE injector converts AC to DC to power these low-voltage PoE devices.Ī PoE injector usually has two RJ45 ports, one labeled Data In and one labeled PoE/Data Out. Power is then “injected” into an Ethernet cable. These devices connect a wireless access point (WAP), PoE lighting, IP camera, or any IEEE 802.3af, IEEE 802.3at, and IEEE 802.3bt-powered device (PD) to a network switch. This affords power with no impact on existing building structures at a minimal cost. A PoE injector is ideal for low-power devices that need to be installed in hard-to-reach places where there are no power outlets available. Although Ethernet switches are available with PoE capability, millions of regular “non-PoE” switches are in use and continue to be installed.” 1Īs stated above, these (also called midspan or PoE adapter) are used to make a non-PoE LAN switch port work with PoE devices. “ A device that adds power to an Ethernet cable for Power over Ethernet (PoE) equipment. PC Magazine defines the PoE injector as follows: This article focuses on the PoE injector: What is it? What does it work? Are there different types? How is it installed? What is a Power over Ethernet (PoE) injector? There are several types of PoE devices, for example, the PoE switch, PoE splitter, PoE injector, etc. This technology improves network agility and scalability in efficient and cost-effective ways. Power over Ethernet (PoE) delivers both power and data concurrently via twisted pair Ethernet cabling.