Secondhand 3kg Portable Oxygen Concentrator Plusmed PM-KN03T

Objective AI Report

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Report Date: 01.12.2025

Plusmed PM-KN03 Portable Oxygen Concentrator Analysis Report

Device Detection and Identification

Visual inspections have revealed that the product is a “Portable Oxygen Concentrator” falling under the respiratory support devices category. Unlike stationary oxygen concentrators, this product is a compact medical device suitable for mobile use, operating on battery power. Essential power and protective accessories required for its operation and transport are also included with the device.

Brand and Model

The inscriptions located on the front control panel and the upper body of the device are clearly legible. Accordingly:

• Brand: Plusmed
• Model: PM-KN03

The brand logo is clearly visible on the front of the product, just above the screen, and the model number “PM-KN03” is below the button panel. The design of the device and the control panel layout confirm this model information.

Originality and Visual Quality

Upon examining the product’s plastic injection quality, the neatness of logo prints, and the placement of the button panel and screen, the product is assessed as original. The color tone and font character of the “Plusmed” logo conform to standards.

Areas of Use

This device is designed to provide oxygen support to patients suffering from COPD (Chronic Obstructive Pulmonary Disease) or other respiratory insufficiencies when they are outside their home, traveling, or in mobile situations. Due to its small size and battery-powered design, it is used to increase the patient’s freedom of movement.

Quantity and Package Contents Information

All parts shown in the visuals have been individually counted, and the set contents are listed as follows:

• 1 Unit Plusmed PM-KN03 Main Device
• 2 Units Detachable Rechargeable Batteries (The two white block batteries in Visual 3.)
• 1 Unit External Battery Charging Cradle/Dock (The cradle with visible pins in Visual 1.)
• 1 Unit AC/DC Power Adapter (Black box) and Power Cable
• 1 Unit Device Special Carrying Bag (Black, with window)
• 1 Unit Black Sponge Filter (Spare)
• 1 Unit Small Square Felt Filter (Spare)

General Condition and Cosmetic Examination

The outer casing of the device is made of white hard plastic. During the examination, no significant yellowing, deep scratches, breaks, or cracks were observed on the casing. The cosmetic condition of the device can be described as “Clean” and “In Good Condition.” Although used, no noticeable heavy signs of wear and tear were found.

Screen and Control Panel Analysis

The device’s LCD screen is active, and its blue backlight is functional. The data on the screen indicates the following:

• Flow Setting: The inscription “L 5” is visible in large fonts on the screen. This indicates that the device’s current oxygen flow setting is at level 5 (or 5 LPM pulse mode).
• Time Counter: A time inscription such as “00:01” or similar is present on the screen; this shows the device’s operating time counter or session duration.
• Battery Status: Icons indicating the battery charge level are discernible on the right side of the screen.

Electronic and Mechanical Components

The fact that the device’s screen powers on proves that the mainboard and display unit are receiving power. The “Power On/Off”, “Mute Audible Alarm”, “Decrease Flow (-)”, and “Increase Flow (+)” buttons on the keypad appear physically sound; there is no wear or erasure on their silicone surfaces.

Battery Status

The device features a replaceable external battery system. In the visuals, the battery casings are intact, with no swelling or deformation observed. Furthermore, the presence of an external charging cradle (dock) allows one battery to be charged externally while another is in use in the device, which is a significant advantage for continuous device operation.

Carrying Bag

The black carrying bag supplied with the product is specially designed for the device. The bag features filter sections allowing the device to breathe, a transparent window enabling screen visibility, and a metal ring opening for oxygen output. No rips or tears were detected in the bag’s fabric.

Potential Failure Risk and Warnings

No physical damage has been detected in the visuals, and the device powering on indicates that its basic electronic functions are operational. However, since the lifespan of oxygen sensors (column lifespan) or the device’s exact oxygen purity cannot be determined by visual analysis, technical service calibration may be recommended before commencing use. No crushing or breakage has been observed in the cables, suggesting a low risk of electrical failure.