48V 0.5A PoE Injector Adapter

SKU: PH-POE-4805L

$56.98

● The 48V PoE power supply supports 10/100Mbps network speeds. ● Stable performance and economical cost. ● The PC+ABS housing is safe and durable. ● Widely used for remote power supply and network connectivity in IP cameras, wireless APs, network bridges, access control systems, and small-scale security monitoring projects.

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Overview
Specs
Application
FAQ
Reviews

Overview

This passive PoE injecter adapter uses a PC+ABS material design, is compatible with both 10/100Mbps transmission rates, and enables simultaneous data and power transmission. It provides a stable DC power supply, completing power supply and data transmission via a network cable, suitable for power support in network projects such as wireless APs, CPEs, monitoring equipment, and industrial terminals. The PoE power supply has a simple structure, stable performance, effectively extends power supply distance, and simplifies cabling.

Feature

The 48V PoE power supply is made of PC+ABS material.
Features automatic detection, overcurrent, overload, and short-circuit protection.
A 10/100Mbps network speed ensures stable and reliable data connection.
Provides data transmission and remote power supply for monitoring wireless networks.

Details

PoE Output Interface
Network Input Interface
Power Interface

48V PoE Injector Size

Size

48V PoE Injector Wiring Diagram

Wiring diagram

Specs

Model	POE-4805L
Input Voltage	AC100-240V
Output Voltage	DC48/0.5A
Port Speed	10/100Mbps
Transmission Core	1/2, 3/6
Power Supply Cores	4/5, 7/8
Network Interface	LAN/POE
Housing Material	Flame retardant engineering plastic

Application

Residential Building

Business Area

Hospital

Office

FAQ

Q1: What's the difference between a PoE injector and a PoE switch?

A PoE injector adapter is typically used to provide PoE power to a single or small number of devices. It injects power to a designated port externally when a regular switch doesn't support PoE. It's simple in structure and low in cost. A PoE switch, on the other hand, has multiple built-in PoE ports and can power multiple devices simultaneously, making it suitable for monitoring systems, enterprise networks, or large-scale deployments. Simply put, PoE power injectors are suitable for small-scale or supplementary power supply applications, while PoE switches are suitable for centralized power supply and systematic management.

Q1: How to choose the power and standard for a poe converter?

When choosing, you should match the appropriate PoE standard to the power requirements of the end devices. IEEE 802.3af has a maximum output of approximately 15.4W, suitable for ordinary IP cameras or VoIP phones; 802.3at (PoE+) has a maximum of approximately 30W, suitable for wireless APs or HD cameras; 802.3bt can provide 60W or higher power, suitable for high-performance APs or special equipment. When selecting a power supply, it is recommended to allow for a certain power margin and confirm that the device supports the corresponding standard to ensure stable and safe power supply.

Q3: What devices can a PoE injector adapter drive?

A PoE power supply can power devices that support PoE power receiving (PD), such as IP network cameras, wireless access points (APs), VoIP phones, access control systems, network bridges, and some IoT terminals. As long as the device conforms to the corresponding PoE standard and is within its power range, power supply and data transmission can be achieved through a single network cable, thereby simplifying the cabling structure and improving installation flexibility.

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From: Michael Lee | Date: 5/6/2026 12:50 AM

Solid basic PoE injector for IP cameras and APs

Used this 48V 0.5A PoE injector to power a few IP cameras and a wireless access point. The 10/100Mbps speed is fine for standard security cameras and basic networking - not for gigabit setups, but that's clearly stated. Output is 48V / 0.5A, which works well for typical PoE devices like small-scale monitoring equipment, network bridges, or access control systems.
The PC+ABS housing feels durable enough, and the built-in protections (overcurrent, overload, short-circuit) give some peace of mind. Power pins are 4/5 (+), 7/8 (-), which matches most passive PoE devices. Input takes standard AC100-240V, so no voltage issues.
It's a passive injector, not active 802.3af/at. As long as you match it with compatible devices, it gets the job done. Simple, no frills, and does what it says on the spec sheet.