1. Important Safety Information
Please read all instructions carefully before using this device. Failure to follow these instructions may result in inaccurate readings or device malfunction.
- This device is intended for sports and aviation use only. It is not a medical device and should not be used for medical diagnosis or treatment.
- Keep the device out of reach of small children.
- Do not use the device in an MRI or CT environment.
- Do not use the device on fingers with nail polish, artificial nails, or open wounds, as this may affect accuracy.
- Ensure proper battery polarity during installation to prevent damage.
2. Product Overview
The CRFISH Fingertip Pulse Oximeter is a portable, non-invasive device designed for spot-checking blood oxygen saturation (SpO2) and pulse rate (PR) at home, during sports activities, or in aviation settings.
Figure 2.1: Key Features. This image highlights the device's accurate SpO2 and PR measurement, reliable resistance to light interference, high-definition LED screen, quick readings (5-8 seconds), suitability for all finger sizes, ±2% SpO2 accuracy, light and portable design, and operating humidity range of 30% to 80%.
Figure 2.2: Product Features and Display. The display shows Blood Oxygen Saturation (%SpO2), Pulse Rate Value (BPM), a Pulse Column (plethysmograph), and the battery indicator. The device features a single action button for operation.
3. Setup
3.1 Unpacking
Carefully remove all components from the packaging. The package should contain:
- 1 x CRFISH Fingertip Pulse Oximeter
- 1 x Lanyard
- 1 x User Manual
3.2 Battery Installation
The device requires two (2) AAA batteries (not included).
- Locate the battery compartment cover on the back of the device.
- Press down on the cover and slide it off to open the compartment.
- Insert two AAA batteries according to the polarity indicators (+ and -) inside the compartment.
- Slide the battery cover back on until it clicks into place.
Figure 3.1: Battery Installation. This diagram illustrates the correct orientation for inserting AAA batteries into the device, emphasizing matching positive and negative poles. It also shows a comparison with incorrect installation.
Video 3.1: Unboxing and Battery Installation. This video demonstrates the unboxing process of the pulse oximeter and provides a visual guide on how to correctly install the AAA batteries into the device.
3.3 Attaching the Lanyard
Thread the thin loop of the lanyard through the small hole on the side of the oximeter. Then, pass the larger end of the lanyard through the thin loop and pull gently to secure it.
4. Operating Instructions
4.1 Taking a Measurement
- Open the clamp of the oximeter.
- Insert one finger (preferably the index finger) into the rubber opening of the oximeter, ensuring the finger is fully inserted and resting on the sensor.
- Release the clamp.
- Press the power button on the front panel to turn on the device.
- Keep your hand still and avoid movement during the measurement. Readings will appear on the display within 8-10 seconds.
- To change the display orientation, press the power button briefly while the device is on.
- The device will automatically power off after approximately 8 seconds of inactivity or when the finger is removed.
Figure 4.1: Steps for Usage. This image provides a clear, four-step visual guide on how to correctly use the pulse oximeter: 1. Open the oximeter, 2. Put your finger in the device, 3. Press the switch button, 4. Wait for results.
Video 4.2: Pulse Oximeter Fingertip Operation. This video demonstrates the practical application of the fingertip pulse oximeter, showing how to place a finger in the device and obtain readings for blood oxygen saturation and pulse rate.
4.2 Understanding the Display
- SpO2: Blood Oxygen Saturation level, displayed as a percentage.
- PR: Pulse Rate, displayed in beats per minute (BPM).
- Pulse Bar/Waveform: A visual representation of your pulse strength.
- Battery Indicator: Shows the remaining battery life.
Figure 4.3: High Definition Bright Screen. This image illustrates the clear and bright LED display of the oximeter, designed for easy readability in various lighting conditions, including a shading design for optimal viewing.
5. Maintenance
5.1 Cleaning
To clean the oximeter:
- Wipe the surface of the device with a soft cloth dampened with alcohol or a mild disinfectant.
- Do not immerse the device in water or any cleaning solution.
- Ensure the device is completely dry before reuse.
5.2 Storage
When not in use for an extended period, remove the batteries to prevent leakage and store the device in a cool, dry place away from direct sunlight and extreme temperatures.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on | Batteries are dead or incorrectly installed. | Replace batteries or re-install them with correct polarity. |
| Inaccurate or unstable readings | Finger not inserted properly, movement during measurement, nail polish, cold fingers. | Re-insert finger correctly, remain still, remove nail polish, warm hands if cold. |
| Display shows "?" or "--- | Signal too weak or absent. | Ensure proper finger placement and stillness. Try a different finger. |
7. Specifications
- Model: 836
- Brand: CRFISH
- Measurement Accuracy (SpO2): ±2% (70%-100%)
- Measurement Accuracy (Pulse Rate): ±2bpm
- Measuring Range (SpO2): 70% - 100%
- Power: 2 x AAA batteries (not included)
- Item Weight: 0.05 Kilograms (without batteries)
- Color: Rose Gold
- Manufacturer: Longnan RenZhong Medical Equipment Co., Ltd.
8. Warranty and Support
CRFISH provides customer service for this product. If you encounter any issues or have questions regarding your pulse oximeter, please contact our customer support team. We are committed to providing friendly customer service.
For support, please refer to the contact information provided with your purchase or visit the official CRFISH website.
9. Intended Use and Applications
This pulse oximeter is designed for non-medical use, specifically for monitoring blood oxygen saturation and pulse rate during various activities. It is suitable for:
- Sports Enthusiasts: Ideal for mountain climbers, skiers, bikers, and individuals engaged in physical activities who wish to monitor their SpO2 and pulse rate.
- Aviation: Suitable for pilots and passengers to monitor oxygen levels during flights.
- General Wellness: For adults and children (ages 12 and above) interested in tracking their general health status.
Figure 9.1: Widely Used. This image demonstrates the versatility of the pulse oximeter, showing its use in sports, aviation, and by adults and children. It also highlights the comfortable silicone finger pads and the device's compact dimensions.
Figure 9.2: Health Monitoring On-the-Go. This image depicts the pulse oximeter in an outdoor, active setting, illustrating its use for monitoring health during activities like skiing. It reinforces the device's portability and convenience for use anywhere.
Figure 9.3: Advanced DSP Algorithm. This image shows the pulse oximeter in a cycling context, emphasizing its use of an advanced DSP algorithm to reduce motion effects and improve the accuracy of perfusion measurements during activity.
Figure 9.4: Light and Convenient. This image highlights the compact size and light weight of the pulse oximeter, demonstrating how easily it can be carried in a pocket for convenience.