1. Introduction
Thank you for choosing the Wöhler STB-1 Digital Wrist Blood Pressure Monitor. This device is designed for accurate and convenient measurement of systolic and diastolic blood pressure, as well as pulse rate, at the wrist. Please read this manual thoroughly before using the device to ensure correct operation and to obtain the most accurate results. Keep this manual for future reference.
2. Safety Information
- Consult your physician before using this device if you have any medical conditions.
- Do not use this device on infants, children, or individuals who cannot express their consent.
- Do not use this device for purposes other than measuring blood pressure.
- Avoid taking measurements in a moving vehicle or during strenuous activity.
- Keep the device away from strong electromagnetic fields.
- Do not disassemble or attempt to repair the device yourself.
- Dispose of batteries and the device according to local regulations.
3. Product Overview
The Wöhler STB-1 Digital Wrist Blood Pressure Monitor features a clear display and easy-to-use buttons for accurate readings.
Figure 1: Front view of the Wöhler STB-1 Digital Wrist Blood Pressure Monitor, showing the display, 'SET', 'MEM', and 'START/STOP' buttons.
Device Components:
- Display: Shows blood pressure readings (SYS, DIA), pulse rate, time, and memory indicators.
- START/STOP Button: Powers the device on/off and starts/stops a measurement.
- MEM Button: Accesses stored measurement data.
- SET Button: Used for setting date, time, and other parameters.
- Wrist Cuff: Integrated cuff for wrist measurement.
4. Setup
4.1 Unpacking
Carefully remove the blood pressure monitor from its packaging. Check for any damage. Retain the packaging for storage or future transport.
4.2 Battery Installation
The device operates with batteries. Locate the battery compartment on the back or side of the device. Insert the required batteries (typically AAA, refer to the compartment label) ensuring correct polarity (+/-). Close the battery compartment securely.
4.3 Setting Date and Time
- With the device off, press and hold the SET button for a few seconds until the year starts flashing.
- Use the MEM button to adjust the year. Press SET to confirm and move to the next setting (month, day, hour, minute).
- Repeat the process for month, day, hour, and minute.
- Press SET one last time to save all settings and exit the setup mode.
5. Operating the Device
5.1 Applying the Wrist Cuff
- Sit comfortably with your arm resting on a flat surface, palm up.
- Place the monitor on your left wrist with the display facing upwards. The monitor should be positioned approximately 1-2 cm from your palm.
- Ensure the cuff is snug but not too tight. There should be enough space to insert one finger between the cuff and your wrist.
- Position your wrist at heart level. This is crucial for accurate readings.
Figure 2: Close-up of the Wöhler STB-1 display, showing typical blood pressure and pulse readings.
5.2 Taking a Measurement
- Ensure you are relaxed and have rested for at least 5 minutes before taking a measurement. Avoid eating, smoking, or exercising for 30 minutes prior.
- Press the START/STOP button. The cuff will automatically inflate.
- Remain still and do not talk during the measurement.
- Once the measurement is complete, the cuff will deflate, and your systolic (SYS), diastolic (DIA) blood pressure, and pulse rate will be displayed on the screen.
- The reading will automatically be stored in the device's memory.
- Press START/STOP again to turn off the device, or it will automatically power off after a period of inactivity.
5.3 Viewing Memory Records
Press the MEM button when the device is off to view previous measurements. Each press of the MEM button will cycle through the stored readings, typically showing the most recent first.
6. Maintenance
6.1 Cleaning
- Wipe the device and cuff gently with a soft, dry cloth.
- If necessary, use a cloth lightly dampened with water or a mild detergent. Do not use abrasive cleaners or immerse the device in water.
6.2 Storage
- Store the device in a cool, dry place, away from direct sunlight, extreme temperatures, and humidity.
- If the device will not be used for an extended period, remove the batteries to prevent leakage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on | Dead batteries; Incorrect battery installation | Replace batteries; Reinstall batteries with correct polarity |
| Inaccurate readings | Improper cuff placement; Wrist not at heart level; Movement during measurement | Re-apply cuff correctly; Position wrist at heart level; Remain still and silent |
| Error message on display | Cuff not inflated properly; Device malfunction | Check cuff connection and re-measure; If problem persists, contact support |
8. Specifications
- Model: STB-1
- Measurement Method: Oscillometric
- Measurement Range: Blood Pressure: 0-299 mmHg; Pulse: 40-199 beats/minute
- Accuracy: Pressure: ±3 mmHg; Pulse: ±5% of reading
- Power Source: Battery operated (specific type not provided, typically AAA)
- Included Components: Charger (as per product data)
- Age Range: Adult
- Manufacturer: Wöhler
9. Warranty and Support
For warranty information or technical support, please refer to the warranty card included with your product or contact the retailer where the device was purchased. Keep your purchase receipt as proof of purchase.