Secondhand Dong Jiang ECG-11A 1 Channel ECG Device

Objective AI Report

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Report date: 18.03.2026
Report code: 1773853098

Dongjiang ECG-11A Electrocardiography Device Analysis Report

Device Identification and Areas of Use

The product in the images is an Electrocardiography (ECG) device that records electrical activities to examine the functioning of the heart muscle and the nervous conduction system. It is suitable for use in cardiology, emergency services, and general practices to monitor patients’ heart rhythm and detect abnormalities.

Brand and Model Information

Based on the writings and logos on the device’s top panel, its brand has been identified as Dongjiang, and its model as ECG-11A. The model name is clearly written in blue letters on the control panel.

Quantity Information

The images show a total of 1 ECG device main unit and 1 multi-lead patient cable (accessory).

General Condition and Physical Deformation

The device is in used condition. Its outer casing, especially on the top and side surfaces, shows significant yellowing, likely due to age and exposure to light. No deep cracks, breaks, or dents have been observed on the casing. The device’s general condition is old but maintains its physical integrity.

Control Panel and Electronic Components

A large control panel consisting of a membrane keypad is located on the upper part of the device. No physical damage or tearing is visible on the panel. The functions identified on the control panel are as follows:

• Speed Settings: 25mm/s and 50mm/s options.
• Filters: HUM and EMG filter buttons.
• Leads: TEST, I, II, III, aVR, aVL, aVF, V1, V2, V3, V4, V5, V6 indicators.
• Modes: MAN (Manual) and AUTO (Automatic) operating modes.
• Other Functions: STOP, CHECK, START, ELECTRODE CHECK, 1mV calibration button, and various navigation/confirmation buttons.
• Power and Status Indicators: In the upper left corner, there is a power switch with STBY (Standby) and OPR (Operating) positions, along with indicator lights showing LINE, BATTERY, and CHARGE statuses.

Mechanical Components and Connection Points

In the middle part of the device, there is a dark-colored, semi-transparent plastic cover for the thermal printer paper compartment. There is no visible break in the cover mechanism, and the inner compartment is empty. Three connection points have been identified on the right side/rear section of the device:

• Metal screw terminal for grounding connection.
• Multi-pin circular socket input for patient cable connection.
• Standard rectangular socket input for power cable.

Accessories

Next to the device, there is 1 ECG patient cable. The cable harness is gray. The end connecting to the device has a wide, multi-pin, and screw-type socket structure. The ends connecting to the patient have metal-pin (banana type) lead cables with red, yellow, green, black, and white color codes. No visible breaks or crushes have been detected on the cables.

Label Information and Warnings

On the device’s top panel, immediately below the brand logo, there is an English safety warning. The warning text is as follows:

• DANGER-POSSIBLE EXPLOSION HAZARD IF USED IN THE PRESENCE OF FLAMMABLE ANESTHETICS (Danger – Possible explosion hazard if used in the presence of flammable anesthetics).

The images do not show the rear/bottom type label indicating the device’s serial number, manufacturing year, or REF code.

Potential Malfunction Risk

The intense yellowing on the device’s outer casing indicates that the product belongs to an older manufacturing year. This situation may carry the risk of embrittlement in internal plastic parts or a loss of sensitivity over time in the conductors beneath the membrane keypad. Furthermore, the BATTERY and CHARGE indications on the panel suggest that the device has an internal battery; given the device’s age, it is highly probable that this battery has reached the end of its life. Apart from this, no clear mechanical breaks or disconnections that would prevent the device from operating have been observed in the images.