1. Introduction
This user manual provides essential instructions for the safe and effective operation of your OPTROTECH YM103 Fingertip Pulse Oximeter. This device is designed for non-invasive spot-check measurement of functional oxygen saturation of arterial hemoglobin (SpO2) and pulse rate. It is intended for use by adults in home environments. Please read this manual thoroughly before use and retain it for future reference.
2. Product Overview
2.1 Key Features
- Fast and accurate measurement results.
- 1.5-inch LED display for clear readings.
- Modern and streamlined design.
- Configurable high/low SpO2 and pulse rate limits with visual alarms.
- Adjustable display brightness to conserve battery.
- Automatic shut-off feature.
- Low battery indicator.
- IP22 level water and dust resistance.
2.2 Device Components
Figure 1: Front view of the OPTROTECH YM103 Fingertip Pulse Oximeter, showing the LED display and power button.
Figure 2: Exploded view illustrating the internal components of the oximeter, including the 1.5" LED display, button, MCU, sensor, and battery cover.
- LED Display: Shows SpO2, pulse rate, pulse bar graph, and battery level.
- Power Button: Used to turn the device on/off and navigate menu options.
- Finger Chamber: Where the finger is inserted for measurement.
- Battery Compartment: Located at the rear for AA batteries.
3. Setup
3.1 Battery Installation
- Open the battery cover located on the back of the device.
- Insert two (2) AA batteries according to the polarity indicators (+ and -) inside the compartment.
- Close the battery cover securely.
Figure 3: Illustration of inserting AA batteries into the battery compartment of the oximeter.
Note: Ensure batteries are inserted correctly. Incorrect installation may prevent the device from functioning.
4. Operating Instructions
4.1 Taking a Measurement
- Ensure your finger is clean and free of nail polish or artificial nails.
- Open the clamp of the oximeter.
- Insert one finger (preferably the index, middle, or ring finger) into the rubber opening of the oximeter, ensuring the nail surface is facing upwards towards the display.
- Release the clamp.
- Press the power button once to turn on the device.
- Keep your hand still during the measurement. Readings will appear on the display within a few seconds.
Figure 4: Correct finger placement in the oximeter for accurate measurement.
Figure 5: The oximeter display showing SpO2 value, Pulse Rate value, Pulse Bar Graph, and Perfusion Index (PI%).
4.2 Understanding the Display
- SpO2: Blood Oxygen Saturation level (%). Normal range is typically 94-100%.
- PR (BPM): Pulse Rate in beats per minute. Normal range is typically 50-130 BPM.
- PI%: Perfusion Index, indicating the strength of the pulse signal. Normal range is typically 0.5-20%.
- Pulse Bar Graph: Visual representation of pulse strength.
- Battery Indicator: Shows remaining battery life.
4.3 Menu Functions and Settings
The device offers various adjustable settings. To access the menu, press and hold the power button while the device is on.
Figure 6: Overview of menu functions including switching display direction, brightness, SpO2 alarm limits, PR alarm limits, and sound on/off.
- Switch Display Direction: Allows changing the orientation of the display for easier viewing.
- Switch Brightness: Adjusts the screen brightness (e.g., br1, br2, br3).
- Set SpO2 Alarm Limits: Configure high and low thresholds for SpO2. An alarm will sound if readings fall outside these limits.
- Set PR Alarm Limits: Configure high and low thresholds for Pulse Rate. An alarm will sound if readings fall outside these limits.
- Switch Sound On/Off: Toggles audible alarms.
Automatic Shut-off: The device will automatically power off after 8 seconds of inactivity or if no finger is detected.
5. Maintenance
5.1 Cleaning
- Clean the surface of the oximeter with a soft cloth dampened with medical alcohol (70% ethanol or isopropanol).
- Do not immerse the device in water or any cleaning solution.
- Ensure the device is dry before reuse.
5.2 Storage
- Store 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.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display after power on | Batteries are dead or incorrectly inserted. | Replace batteries or re-insert them correctly, observing polarity. |
| Display shows "Finger Out" or unstable readings | Finger not inserted properly; finger too cold; excessive movement; nail polish. | Re-insert finger correctly; warm finger; remain still; remove nail polish. |
| Low battery indicator appears | Batteries are low. | Replace with new AA batteries. |
7. Specifications
| Parameter | Detail |
|---|---|
| Brand | OPTROTECH |
| Model Number | YM103 |
| Display Type | 1.5 Inches LED Display |
| Measurement Parameters | SpO2, Pulse Rate (PR), Perfusion Index (PI%) |
| Power Source | 2 x AA Batteries (not included) |
| Item Weight | 100 g |
| Product Dimensions | 6 x 4 x 6 cm |
| Water Resistance | IP22 |
8. Warranty and Support
The OPTROTECH YM103 Pulse Oximeter comes with a 3-month warranty from the date of purchase. Please retain your purchase receipt as proof of purchase.
For technical support, warranty claims, or further assistance, please contact your retailer or the manufacturer directly. Contact information can typically be found on the product packaging or the official OPTROTECH website.