Introduction
This manual provides essential instructions for the safe and effective use of your COOLM 6V 1A Power Supply Adapter. This adapter is designed to provide reliable power to compatible Omron Healthcare Upper Arm Blood Pressure Monitors, offering an alternative to battery power. Please read this manual thoroughly before use and retain it for future reference.
Safety Information
To ensure safe operation and prevent damage to the adapter or your blood pressure monitor, observe the following safety guidelines:
- Short Circuit Protection: The adapter is equipped with internal protection against short circuits. However, avoid intentionally shorting the output.
- Overload Protection: Designed to prevent damage from excessive current draw. Do not connect to devices requiring more than 1A.
- Over Voltage Protection: Protects connected devices from voltage spikes.
- Use only with compatible devices as listed in this manual.
- Do not expose the adapter to water, moisture, or extreme temperatures.
- Do not disassemble or modify the adapter.
- Unplug the adapter from the wall outlet when not in use for extended periods.
- Keep out of reach of children.
Package Contents
Verify that all items are present in your package:
- 1 x COOLM DC 6V 1A Power Supply Adapter with 4.0mm x 1.7mm plug
Specifications
| Feature | Detail |
|---|---|
| Input Voltage | 100-240V AC, 50/60Hz |
| Output Voltage | 6V DC |
| Output Current | 1A (Max) |
| Output Power | 6W (Max) |
| DC Output Plug Size | 4.0mm x 1.7mm |
| DC Cable Length | Approximately 4.6 feet (140 cm) |
| Polarity | Center Positive (+) |
| Safety Features | Short Circuit Protection, Overload Protection, Over Voltage Protection |
| Dimensions (Adapter) | 5.28 x 3.74 x 1.18 inches |
| Item Weight | 2.89 ounces |
Setup
Follow these steps to connect your COOLM 6V 1A Power Supply Adapter to your Omron Blood Pressure Monitor:
- Locate the DC input jack on your Omron Blood Pressure Monitor. This is typically a small circular port.
- Ensure the blood pressure monitor is turned off.
- Insert the DC output plug (4.0mm x 1.7mm) of the COOLM adapter firmly into the DC input jack of your blood pressure monitor.
- Plug the AC input prongs of the COOLM adapter into a standard 100-240V AC wall outlet.
- The blood pressure monitor is now ready for use with external power.

Figure 1: The COOLM 6V 1A Power Supply Adapter. This image shows the main adapter unit with its two-prong AC plug and the attached DC output cable, which is coiled. The DC plug is visible at the end of the cable.
Operating Instructions
Once the adapter is connected as described in the Setup section:
- Turn on your Omron Blood Pressure Monitor. It should now operate using power from the wall outlet instead of batteries.
- The adapter provides a stable 6V DC at up to 1A. If your previous adapter had a lower amperage (e.g., 500mA or 700mA), this 1A adapter is a suitable replacement as amperage is not forced; the device will only draw the current it requires.
- Always refer to your Omron Blood Pressure Monitor's instruction manual for specific operating procedures of the monitor itself.

Figure 2: Close-up view of the DC output plug. This image highlights the specific dimensions of the barrel connector, which is 4.0mm x 1.7mm, ensuring compatibility with devices requiring this size.
Maintenance
Proper care will extend the life of your power adapter:
- Keep the adapter clean and dry. Wipe with a soft, dry cloth if necessary.
- Avoid bending or kinking the power cord excessively.
- Store the adapter in a cool, dry place when not in use.
- Regularly inspect the cable and plug for any signs of damage. If damage is observed, discontinue use and replace the adapter.
Troubleshooting
If your blood pressure monitor does not power on when connected to the adapter, consider the following:
- No Power:
- Ensure the adapter is securely plugged into both the wall outlet and the blood pressure monitor.
- Check if the wall outlet is functional by plugging in another device.
- Verify that your blood pressure monitor is compatible with a 6V DC power supply and the 4.0mm x 1.7mm plug size.
- Intermittent Power:
- Inspect the adapter cable and plug for any visible damage or loose connections.
- Ensure the DC plug is fully inserted into the monitor's port.
If issues persist, please contact customer support.
Compatible Devices
This COOLM 6V 1A Power Supply Adapter is compatible with various Omron Healthcare Upper Arm Blood Pressure Monitors, including but not limited to:
- Omron 5 Series: BP742, BP742N, HEM-742int, HEM-704C
- Omron 7 Series: BP760, BP760N, BP761, BP761N, BP760, BP654, BP652 (HEM-7220-Z)
- Omron 10 Series: BP785 (HEM-7222-Z)
- Omron 10 Series+: BP791IT, BP785N, BP785, BP786N, BP786, BP791 (HEM-7222-ITZ)
- Other Compatible Models: HEM-711AC, HEM-711DLX, HEM-712C, HEM-712CLC, HEM-780, HEM-790IT
- Replacement for: Hem-ADPTW5, Hem ADPTW5
Always verify the power requirements and plug size of your specific Omron model before use.
Warranty and Support
COOLM is committed to providing quality products and customer satisfaction. If you encounter any issues or have questions regarding your 6V 1A Power Supply Adapter, please refer to the retailer's return policy or contact COOLM customer service for assistance. Information regarding specific warranty terms may be available through your point of purchase.
For further support, please visit the COOLM Store on Amazon.