Microlife BP 3BT0-A Blood Pressure Monitor User Manual

The Microlife BP 3BT0-A is an automatic upper arm blood pressure monitor with advanced features for accurate and convenient home monitoring. It utilizes the clinically validated Microlife Average Mode (MAM) technology, features an irregular heartbeat detector, includes a large memory for multiple users, has a body movement detection system, and offers clear visual indicators for hypertension risk according to WHO guidelines. Below are key sections for safety, features, setup, operation, and maintenance.

Features at a Glance

Key components: Main unit with large LCD display, Easy-Wrap ComFit cuff, 4x AA batteries, storage case, and instruction manual.

Safety Information

Read all instructions before use. For accurate results and safe operation:

1. Intended Use: For non-invasive measurement of systolic and diastolic blood pressure and pulse rate from the upper arm of adult patients in home environments.
2. Contraindications: Not for use on infants, children, or patients with pre-eclampsia. Consult a physician if you have an arrhythmia, heart disease, or circulatory problems.
3. Precautions: Do not use near strong electromagnetic fields (e.g., mobile phones, microwave ovens). Do not use on a wounded or injured arm.
4. Warnings: Do not modify the device. Measurements are for reference only and are not a substitute for professional medical diagnosis.

WARNING! A diagnosis of hypertension and decisions about treatment should only be made by a qualified healthcare professional.

Package Contents

• Microlife BP 3BT0-A Blood Pressure Monitor (Main Unit)
• Easy-Wrap ComFit Cuff (22-42 cm)
• 4 x 1.5V AA alkaline batteries
• Instruction Manual (this document)
• Storage Case
• Quick Start Guide

CAUTION! Inspect all contents. Do not use if any part appears damaged.

Device Overview

Front Panel (Display & Controls):

• LCD Display: Shows systolic/diastolic pressure, pulse, date/time, user icon, memory index, and symbols (MAM, IHD, movement, battery, WHO bar).
• START/STOP Button: Initiates and stops measurements.
• M (Memory) Button: Recalls stored readings and sets clock.
• User Button (1/2): Selects User 1 or User 2 for memory storage.

Cuff & Tubing: Cuff with Velcro closure and air tube permanently connected to the main unit.

Initial Setup & Battery Installation

1. Open the battery compartment cover on the back of the device.
2. Insert 4 new AA batteries, observing the correct polarity (+/-) as indicated.
3. Close the cover securely.
4. The display will show all segments briefly, then the date/time setting mode will activate.
5. Use the M button to select the value (year, month, day, hour, minute) and the START/STOP button to increase it. Press M to confirm and move to the next setting.

Tip: Replace all batteries at the same time. Remove batteries if the device will not be used for an extended period.

Applying the Cuff

Correct cuff placement is critical for an accurate reading.

1. Sit comfortably on a chair with your feet flat on the floor. Rest for 5 minutes.
2. Bare your left upper arm. Slide your arm through the cuff loop.
3. Position the cuff so the air tube (marked with an Φ artery symbol) runs down the center of your inner arm, aligned with your middle finger.
4. The lower edge of the cuff should be 2-3 cm above your elbow.
5. Wrap the cuff snugly around your arm and secure the Velcro. You should be able to fit one finger between the cuff and your arm.
6. Rest your arm on a table so the cuff is at heart level.

WARNING! Do not apply the cuff over clothing. Tight or loose cuff placement will cause inaccurate readings.

Taking a Measurement

1. Ensure you are relaxed. Sit upright with back supported.
2. Press the User (1 or 2) button to select your memory profile. The corresponding icon will appear.
3. Press the START/STOP button. All display symbols will appear, and the cuff will begin to inflate automatically.
4. Remain still and quiet. Do not move your arm or talk during the measurement.
5. The cuff will deflate automatically. Your systolic pressure, diastolic pressure, and pulse rate will be displayed.
6. To use MAM Mode for an average reading: After the first reading, do not remove the cuff. The device will automatically start two more measurements at 1-minute intervals and then display the average of all three readings.
7. The reading is automatically saved to the selected user's memory.

Understanding the Display & Results

Primary Readings:

• SYS: Systolic pressure (e.g., 120 mmHg)
• DIA: Diastolic pressure (e.g., 80 mmHg)
• Pulse Symbol & Value: Heart rate per minute (e.g., 72 P/min)

Indicator Symbols:

• WHO Bar Graph: A colored bar indicates your category: Green (Normal), Yellow (Mild Hypertension), Orange (Moderate), Red (Severe).
• IHD Symbol (Heart with *): Flashes if an irregular heartbeat is detected during measurement.
• Movement Symbol (Person): Appears if body movement was detected, suggesting the reading may be unreliable.
• MAM Symbol: Appears when the device is in or displaying an Average Mode result.
• Low Battery Symbol: Appears when batteries need replacement.

Using the Memory Function

The device stores the last 99 readings for each of two users, with date and time.

To Recall Memory:

1. Press the M (Memory) button once. The most recent reading for the selected user appears.
2. Press M again to scroll backwards through all stored readings for that user.
3. The memory index number (e.g., 01) and the date/time of the reading are shown.

To Clear Memory for One User: While in memory recall mode for that user, press and hold the M button for approximately 3 seconds until the display clears.

Care & Maintenance

Unplug (remove batteries) before cleaning.

1. Device & Cuff: Wipe with a soft, slightly damp cloth. Do not immerse in water or use abrasive cleaners.
2. Storage: Store in the provided case in a cool, dry place away from direct sunlight and extreme temperatures.
3. Cuff Care: Do not fold the cuff tightly over the air tube. Do not twist or kink the tube.
4. Batteries: Replace all batteries when the low battery symbol appears. Use only alkaline batteries.

CAUTION! Never use benzene, thinner, or other solvents to clean the device. Do not attempt to disassemble or repair the unit.

Troubleshooting & Error Messages

Service: For technical support, contact Microlife at the number listed in the warranty card or visit www.microlife.com.

Technical Specifications

• Measurement Method: Oscillometric
• Measurement Range: Pressure: 0 - 299 mmHg; Pulse: 40 - 199 beats/min
• Accuracy: Pressure: ±3 mmHg; Pulse: ±5% of reading
• Memory: 99 readings x 2 users
• Cuff Size: 22 - 42 cm arm circumference (ComFit)
• Power Supply: 4 x 1.5V AA alkaline batteries (DC 6V)
• Auto Power Off: Approx. 1 minute after last operation
• Operating Conditions: 10°C to 40°C, 15% to 90% RH (non-condensing)
• Storage Conditions: -20°C to +60°C, ≤ 93% RH
• Dimensions (Main Unit): Approx. 123mm (W) x 98mm (H) x 141mm (D)
• Weight (without batteries): Approx. 300g