1. Introduction and Overview
The Rossmax SB100 Fingertip Pulse Oximeter is a compact, non-invasive device designed for spot-checking oxygen saturation of arterial hemoglobin (SpO2) and pulse rate. It is suitable for use in sports and aviation environments for monitoring purposes. This manual provides essential information for the safe and effective operation of your device.

Image 1.1: The Rossmax SB100 Fingertip Pulse Oximeter showing its display with SpO2 and pulse rate readings.
2. Important Safety Information
WARNING: This device is intended for sports and aviation use only. It is not a medical device and is not intended for medical diagnosis or treatment. Consult a medical professional for any health concerns.
- Do not use the oximeter in an MRI or CT environment.
- Do not use the oximeter in situations requiring continuous monitoring.
- Keep the device away from young children. Small parts may pose a choking hazard.
- Avoid exposing the device to direct sunlight, extreme temperatures, or moisture.
- Do not attempt to repair or modify the device yourself. Refer to qualified service personnel.
3. Product Features
The Rossmax SB100 Fingertip Pulse Oximeter offers several key features for effective monitoring:
- Accurate and Reliable: Provides precise readings of oxygen saturation (SpO2) and pulse rate.
- Easy to Use: Features simple one-button operation for convenience.
- Quick Results: Delivers fast and accurate readings within seconds.
- Comfortable Design: Ergonomically designed to fit comfortably on the finger.
- Portable: Compact size and battery-powered for use at home, in the office, or while traveling.
- Clinically Tested: Meets clinical standards for accuracy and reliability.
- Pulse Rate Strength Indicator: Visual indication of pulse signal strength.
- Big LED Screen Display: Clear display for easy reading of values.
- Shielded Design: Blocks ambient light for improved reading accuracy.
- Biocompatibility & Anti-Allergic Design: Designed for user comfort and safety.

Image 3.1: An illustration of the Rossmax SB100 Oximeter highlighting its key features such as SpO2 & Pulse Rate display, shielded design, and pulse strength indicator.
4. Package Contents
Upon unpacking your Rossmax SB100 Fingertip Pulse Oximeter, please ensure all the following items are present:
- Rossmax SB100 Fingertip Pulse Oximeter unit
- 2 x AAA batteries
- User Manual (this document)
- Carrying case
5. Setup
5.1 Battery Installation
- Open the battery compartment cover located on the back of the device.
- Insert the two AAA batteries according to the polarity indicators (+ and -) inside the compartment.
- Close the battery compartment cover securely.
The device is now ready for use.
6. Operating Instructions
6.1 Taking a Measurement
- Ensure the oximeter has fresh batteries installed.
- Open the clamp of the oximeter.
- Insert one of your fingers (preferably the index, middle, or ring finger) into the rubber opening of the oximeter, ensuring your nail is facing upwards towards the display.

Image 6.1: Proper placement of the oximeter on the index finger for a reading.
- Release the clamp, allowing it to gently close on your finger.
- Press the power button once to turn on the oximeter.
- Keep your hand still and avoid movement during the measurement. The readings for SpO2 and pulse rate will appear on the display within a few seconds.

Image 6.2: The oximeter in active use, displaying SpO2 and pulse rate on the screen.
- The device will automatically power off after approximately 8 seconds of inactivity.
7. Understanding the Display
The Rossmax SB100 display provides the following information:
- SpO2 (%): This indicates the percentage of oxygen saturation in your blood.
- Pulse Rate (BPM): This shows your heart rate in beats per minute.
- Pulse Strength Indicator: A bar graph or waveform that visually represents the strength of your pulse signal. A stronger signal generally indicates a more reliable reading.
- Battery Indicator: Displays the current battery level.

Image 7.1: A detailed view of the oximeter's LED display, showing the SpO2 percentage, pulse rate in BPM, and the pulse strength bar graph.
8. Maintenance
8.1 Cleaning the Device
- Clean the surface of the oximeter with a soft cloth dampened with a mild detergent or medical alcohol.
- Do not immerse the device in water or any cleaning solution.
- Ensure the device is completely dry before reuse.
8.2 Storage
- Store the oximeter in its carrying case when not in use.
- Keep the device in a cool, dry place, away from direct sunlight and extreme temperatures.
- Remove batteries if the device will not be used for an extended period to prevent leakage.
9. Troubleshooting
If you encounter issues with your Rossmax SB100, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No display after turning on | Batteries are dead or incorrectly inserted. | Replace batteries or reinsert them correctly, observing polarity. |
| SpO2 or Pulse Rate display unstable | Finger not inserted properly, excessive movement, or weak pulse signal. | Reinsert finger, ensure stillness, or try a different finger. |
| "Error" message on display | Device malfunction or inability to obtain a reading. | Restart the device. If the problem persists, contact customer support. |
10. Specifications
| Specification | Detail |
|---|---|
| Brand | Rossmax |
| Model Number | PO-RM |
| Item Weight | 30 g |
| Product Dimensions (LxWxH) | 12.4 x 4.6 x 8 cm |
| Batteries | 2 AAA batteries (included) |
| Average Battery Life | 50 Hours |
| Country of Origin | Taiwan |
| ASIN | B00Z89SZG4 |
| Date First Available | 14 July 2017 |
11. Warranty and Support
11.1 Warranty Information
The Rossmax SB100 Fingertip Pulse Oximeter is backed by a 2-year warranty from the date of purchase. This warranty covers manufacturing defects under normal use. Please retain your proof of purchase for warranty claims.
11.2 Customer Support
For further assistance, technical support, or warranty inquiries, please visit the official Rossmax store or contact their customer service department. You can find more information at the Rossmax Store on Amazon.







