TP-POE-1824G Passive POE Converter - 48V to 18/24V Power Adapter

In this review the TP-POE-1824G is examined as a niche power adapter for networking gear that need nonstandard passive POE voltages. The bottom line: it is for installers and integrators who need to run 18V or 24V passive POE devices from standard 48V IEEE 802.3af/at sources, and its single biggest advantage is simple, reliable conversion with selectable output voltage so existing 802.3af/at switches can power noncompliant equipment without extra injectors. The review focuses on real-world fit, protection features, and deployment limits.

Key Features

• 48V input to 18/24V output: Converts standard IEEE 802.3af/at 48V POE input into a regulated 18V or 24V passive POE output to run legacy or passive devices.
• Switch-selectable voltage: External jumper selection lets installers change the POE output between 18VDC and 24VDC without rewiring, simplifying field adjustments.
• Up to 25W output: The adapter supplies substantial power for many access points, cameras, and sensors while staying within the converter's output capability.
• Remote powering over Cat5: Delivers power and data up to 100m over standard Cat5 cabling so equipment can be installed at distance from the switch.
• Protection features: Built-in short circuit, over current and over voltage protection helps protect both the source switch and connected device during faults.

Who It's For

The TP-POE-1824G is aimed at network installers, security camera technicians, and integrators who need to power passive POE devices from modern 802.3af/at switches without replacing existing cabling or buying dedicated injectors. It is especially useful when migrating mixed fleets of devices where some require 18V or 24V passive POE.

It is not intended for users who need broadband power beyond the adapter's approx 25W output or who require active managed switching features; customers who need Power over Ethernet with midspan management, PD classification, or higher wattage should look at full POE injectors or higherpower equipment instead.

Pros & Cons

Pros

• Allows noncompliant passive POE devices to run from standard 802.3af/at switches without extra power supplies.
• Simple jumper or switch selection for 18V or 24V output makes field changes quick and clear.
• Provides short circuit, over current and over voltage protection to reduce risk during faults.
• Supports remote powering up to 100m over Cat5, matching common cabling standards for installations.

Cons

• Output power is limited to the converter's rated watts (around 25W), so very highpower devices may not be supported.
• It only converts 48V POE to fixed 18V or 24V passive outputs, so devices needing other voltages require different adapters.

Specifications

Product	TP-POE-1824G passive POE converter
Input	IEEE 802.3af/at 48V POE
Output voltages	Switchable 18VDC or 24VDC passive POE
Maximum output power	Up to 25W output capability
Cable reach	Power and data up to 100m over Cat5
Protections	Short circuit, over current, over voltage protection
Use case	Power passive POE devices from 802.3af/at switches

Our Verdict

The TP-POE-1824G is a practical tool for professionals who must power legacy or passive POE equipment from modern switches; its selectable 18V/24V output and builtin protections make deployments easier and safer. For installations within the approx 25W output envelope it offers good value by avoiding extra adapters or dedicated power runs, but installers should confirm device current draw before relying on it for higher power loads.

Frequently Asked Questions

Can this run a passive 24V camera from a 48V POE switch?
Yes. The unit converts 48V 802.3af/at input to a regulated 24V passive POE output when the jumper is set to 24V, provided the camera's power draw stays within the adapter's output capacity.

How far can it deliver power over Cat5?
It delivers power and data up to 100m over Cat5 cable, which matches common Ethernet installation limits.

Does it protect connected equipment from faults?
Yes. The converter includes short circuit, over current and over voltage protection to reduce the risk of damage in fault conditions.