1. Introduction
This manual provides essential information for the proper use and maintenance of your Wearpulse Sleep SPO2 Ring Sensor. This accessory is designed to be used with compatible devices such as CheckmeO2 Max, SleepU, Visual Oxy, and Wearpulse Sleep Monitors to accurately measure blood oxygen saturation (SpO2) and pulse rate during sleep. Please note that this product is an accessory and does not include the main monitoring device.

Image 1.1: The Wearpulse Sleep SPO2 Ring Sensor, a compact and lightweight accessory designed for comfortable wear.
2. Product Features
- Compatibility: Designed for use with CheckmeO2 Max, SleepU, Visual Oxy, and Wearpulse Sleep Monitors.
- Comfortable Design: Made with soft silicone material for extended wear.
- Connectivity: Features a standard USB socket for connection to the main device.
- Accurate Measurement: Provides reliable SpO2 and pulse rate data when connected to a compatible monitor.
3. Setup and Connection
To begin using your Sleep SPO2 Ring Sensor, follow these steps to connect it to your compatible monitoring device:
- Identify the Connection Port: Locate the USB input port on your CheckmeO2 Max, SleepU, Visual Oxy, or Wearpulse Sleep Monitor.
- Connect the Sensor: Gently insert the USB plug of the Sleep SPO2 Ring Sensor into the identified port on your main device. Ensure a secure and firm connection.
- Position the Sensor: Place the ring sensor on your finger. For optimal readings, ensure the sensor is snug but not uncomfortably tight. The soft silicone material is designed for comfort during sleep.
- Verify Connection: Refer to your main monitoring device's display or accompanying application to confirm that the sensor is recognized and data transmission has begun.

Image 3.1: The Sleep SPO2 Ring Sensor worn on a finger, connected to a wrist-worn monitoring device, with data displayed on a smartphone application.

Image 3.2: The Sleep SPO2 Ring Sensor in use, demonstrating its connection to a wrist monitor and the display of oxygen level and pulse rate data on both a smartphone and a laptop for detailed reporting.
4. Operating Instructions
Once the Sleep SPO2 Ring Sensor is properly connected to your main monitoring device, its operation is largely managed by the primary unit. Follow the instructions provided with your CheckmeO2 Max, SleepU, Visual Oxy, or Wearpulse Sleep Monitor for specific operational details.
- Wearing the Sensor: Ensure the sensor is placed on a clean, dry finger. Avoid placing it on fingers with excessive movement or poor circulation.
- Data Collection: The sensor will automatically begin collecting SpO2 and pulse rate data once the main device is activated.
- Monitoring: View real-time data and historical trends through the associated mobile application or software provided with your main monitoring device.
- Vibration Alerts: If your main device supports vibration alerts for low oxygen levels, ensure this feature is enabled in your device's settings. The sensor facilitates this alert function.

Image 4.1: The Sleep SPO2 Ring Sensor, highlighting its integrated USB cable for direct connection to compatible monitoring devices.
5. Maintenance and Care
Proper maintenance ensures the longevity and accuracy of your Sleep SPO2 Ring Sensor.
- Cleaning: Gently wipe the sensor with a soft, damp cloth. Do not use abrasive cleaners or immerse the sensor in water. Ensure it is completely dry before storage or next use.
- Storage: Store the sensor in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Avoid bending or twisting the cable excessively, especially near the sensor housing, as this can cause wear and tear over time.
- Inspection: Periodically inspect the sensor and cable for any signs of damage or wear. If damage is observed, discontinue use and consider replacement.
6. Troubleshooting
If you encounter issues with your Sleep SPO2 Ring Sensor, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No data reading / Sensor not detected | Loose connection; Incompatible device; Sensor malfunction. | Ensure the USB plug is securely inserted. Verify your main device is listed as compatible. If issues persist, the sensor may be faulty. |
| Inaccurate readings | Improper sensor placement; Dirty sensor; Excessive movement. | Reposition the sensor for a snug fit. Clean the sensor surface. Minimize hand movement during measurement. |
| Vibration alert not working | Vibration setting disabled on main device; Sensor cable damage. | Check the settings on your main monitoring device to ensure vibration alerts are enabled. Inspect the cable for visible damage. |
| "Error 4" or similar error message | Sensor malfunction or internal issue. | This typically indicates a sensor failure. Replacement may be necessary. |
If troubleshooting steps do not resolve the issue, please contact Wearpulse customer support for further assistance.
7. Specifications
| Attribute | Detail |
|---|---|
| Brand | Wearpulse |
| Model Number | CheckmeO2 Max Sensor |
| Compatible Devices | CheckmeO2 Max, SleepU, Visual Oxy, Oxiband, Wearpulse Sleep Monitor, Smartphones (via main device) |
| Sensor Type | Optical |
| Material | Silicone |
| Connectivity | USB socket |
| Color | Black or White |
| Item Weight | 0.01 Kilograms |
| Package Dimensions | 6.22 x 2.2 x 1.02 inches |
| Manufacturer | Viatomtech |
| Date First Available | January 16, 2023 |
8. Warranty and Support
For information regarding product warranty, returns, or technical support, please refer to the documentation provided with your original purchase or visit the official Wearpulse website. Wearpulse offers various protection plans for extended coverage. For specific inquiries, you may contact Wearpulse customer service directly.
Return Policy: This product typically has a 30-day return policy for refund or replacement, subject to the retailer's terms and conditions.
Protection Plans: Optional 2-Year and 3-Year Protection Plans may be available for purchase to cover your device beyond the standard warranty period.