1000Mbps Gigabit Single-port Passive POE Injector Power Splitter for IP Camera POE Adapter Module Accessories POE DC12-48v 1. The POE power supply module supports various DC power inputs. The power adapter can be connected to the POE power supply module according to the voltage required by your POE network equipment. The DC power supply can be loaded into the RJ45 Ethernet power supply port through the POE power supply module to power the network equipment without POE function. (Refer to the following applications) Mode 1: network equipment without POE function POE module and power supply use (4/5; 7/8) Pin transmission technology to operate. & nbsp; & nbsp; The POE module has a simple wall-mounted and simple connection mode, which provides a better solution for the difficulty of setting up power supply, provides a simple erection mode for complex environment and saves unnecessary wiring costs& nbsp; Mode 2: network equipment with POE function a. It can pass voltage DC 5 ~ 48V, current 1000ma & nbsp; & nbsp; B. It can be fixed on the wall with self-tapping screws & nbsp; & nbsp; C. LED lamp display ensures voltage and current POE port = power supply (45+ 78-)+ data (12345678) LAN Port = Data (12345678) POE port: connect the bridge AP CPE device WAN interface LAN port: connect to the router switch or directly connect to the computer host network interface Standard for connecting network cables to equipment: Through 568B; (Main line, that is, straight line, standard 568B: the line sequence at both ends is the same, from left to right: white orange, orange, white green, blue, white blue, green, white brown, brown) 2. Power supply distance: Generally speaking, in the case of pure copper network cable and 12V or 15V power supply, the distance is about 30 meters (the actual use distance is related to the quality of the network cable, the power supply voltage and the voltage adaptability of the powered equipment). The higher the voltage, the quality of the network cable is OK, and the longer the effective power supply distance. Because the general network only uses 1236 to transmit DATA (network data), and 4578 is idle, many businesses producing network cables mostly have four impure copper wires when producing network cables. If such wires are used in POE power supply, the supply voltage will drop greatly. Because the network cable is very thin, the quality residuals are uneven, and some of them are iron wire copper-clad aluminum wires, the resistance of the network cable is very large and the loss is very serious. Actual test results: The average network cable is reduced by one V at 10 Mi Yue at 12V. So the voltage is about 12V and within 20 meters. 3. How to distinguish the quality of network cable: 1. Look at the material from the outer skin: use your hand to pick the outer skin of the network cable, soft and fluffy like a little hollow is of relatively poor quality, and the quality is not bad to the touch is relatively full. 2. Judge the tension of the network cable: If the elasticity of the outer skin is very large, the quality is poor, and it is easy to cause the inner core to be torn off when the wire is pulled hard. 3. Go deep into the copper core to see the composition: use scissors or mesh cable pliers to cut a small section of the network cable to see, if the core of the network cable is copper on the outside, but the inner core is a silver-white steel core, it is relatively poor, 1 yuan a meter. If the inside and outside are yellow copper, the quality is OK, 2-3 yuan a meter. 4. Besides, it depends on the thickness of the copper core, some materials are less, the copper core is thinner, and some are thicker. Just look at the above places for the super-category 5 network cable. Category 6 and 7 also have shielding function, depending on the shielding layer in the network cable. Some are to wrap eight network cables in the skin, while others are to wrap each pair of network cables in a shielding layer, which is the difference. Why do some people say that a few meters of power supply is not enough? (The network cable material is important) Here, the shopkeeper will give you a little knowledge of online cable self-test. 1. Iron wire, generally with a strong magnet can be checked, this can not be used; & nbsp; & nbsp; 2. Zinc copper wire (also called brass, zinc content is about 32%~39%, and people in Computer City are generally called pure copper), which is generally softer than iron wire and harder than oxygen-free copper. The inspection method is to use a blade to scrape. If there is obvious color difference between the internal color and the outer skin of the scraped wire, it must be zinc copper, or even copper plated. 3. Oxygen-free copper wire (also called phosphor copper), this wire is generally very soft, cut short to see the cross-section, the color and the skin is the same, this kind o