Secondhand Dedakj DE-1LW 6.5kg Portable Oxygen Concentrator

Objective AI Report

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Report date: 20.08.2025

DEDAKJ Oxygen Concentrator Analysis Report

Overview and Device Identification

The visuals show an oxygen concentrator designed for home use and an AC-AC converter belonging to it. The product is used to provide high-concentration oxygen to the user by separating nitrogen from ambient air. The set in the visual consists of a total of two parts: one main device and one power adapter. The device’s overall design features an integrated handle that facilitates portability.

Brand Information

The brand DEDAKJ is clearly visible in green capital letters on the device’s front panel. Since the brand information is prominent in the visuals, it has been definitively determined that the product belongs to this brand. However, no writing or label indicating the device’s model is present in the visuals.

Physical Condition and Deformation Analysis

The general condition of the product is very good, and it is observed to be in a lightly used condition. There is no significant deformation such as scratches, cracks, dents, or discoloration on the device’s white and blue plastic casing. The surfaces have a clean and shiny appearance, which indicates the device has been used carefully. There is also no dirt, rust, or stains on it.

Mechanical and Electronic Component Assessment

• Control Panel: On the front of the device, there is an LCD screen and four buttons below it with “Voice”, “Timing”, “Flow Rate”, and power (On/Off) functions. The screen is off, and no damage is visible on it.
• Flow Adjustment Knob: The mechanical rotary knob on the right side, which allows flow adjustment from 1L to 6L, is in sound condition. The “OFF” position is also on this knob.
• Water Reservoir: The water reservoir used for humidification on the front of the device is in place and has a “Highest Water Level” mark on it. The reservoir is clean and intact.
• Oxygen Outlet: The oxygen outlet port labeled “Oxygen Outlet” and the white hose connected to it appear to be in good condition.

Accessories and Power Supply

Next to the device is a black AC-AC converter (adapter), which is necessary to operate the device. This adapter is the device’s external power source. No other accessories (spare filter, carrying case, etc.) are present in the visual. It cannot be determined whether any parts are missing by only looking at the parts in the visual.

Label Information and Instructions

On the front right side of the device, there is a usage instructions label (Tips) written in English on a yellow background. The following warnings are included on this label:

• Ensure that the two buttons at the bottom of the machine are on.
• Do not exceed the maximum water level in the water tank.
• Ensure the air filter cotton is dry before use.
• Expect the button to turn from red to white when the device is started.
• The sound of oxygen concentration is normal.
• Wash the air filter cotton with water every 10 days, otherwise, air flow and oxygen concentration will be affected.
• If water leakage occurs during transportation, the device should be allowed to stand for 24 hours before use.

No label containing technical information such as the device’s serial number, lot number, or REF code is visible in the visuals.

Potential Malfunction Risk Assessment

According to the examination of the visuals, no signs of malfunction or significant wear that could pose a potential malfunction risk have been observed on the device. The device’s casing, buttons, connection points, and accessories are well-preserved. This suggests a high probability that the device’s mechanical and electronic components will function without issues. The product appears to offer reliable use in its current condition.