Microlife BP 3AP1-3E Blood Pressure Monitor User Manual
The Microlife BP 3AP1-3E is an automatic upper arm blood pressure monitor with advanced features including irregular heartbeat detection, 3x averaging for more reliable readings, 99 memory storage, WHO hypertension indicator, date/time display, and one-touch operation. It is clinically validated, designed for easy home use, and powered by 4x AA batteries or optional AC adapter. Below are key sections for safety, features, setup, measurement, memory, and troubleshooting.
Features at a Glance
Key components: Main unit with LCD display, Universal Cuff (22-42 cm), AC adapter port, Battery compartment, START/STOP button, Memory button.
| Feature | Description |
| Automatic Inflation & Deflation | One-touch operation for easy measurement |
| 3x Averaging (MAM Technology) | Takes three consecutive readings for a more reliable average result |
| Irregular Heartbeat Detection (IHD) | Detects pulse irregularities during measurement |
| 99 Memory Storage | Stores readings with date and time for two users |
| WHO Hypertension Indicator | Color-coded bar graph shows classification of your result |
| Large LCD Display | Easy-to-read backlit screen |
| Universal Cuff | Fits arm circumferences 22 to 42 cm (8.7" to 16.5") |
| Date & Time Stamp | Records when each measurement was taken |
| Automatic Power Off | Conserves battery life |
| Clinically Validated | Meets international accuracy standards |
Safety Information
Read all instructions before use. For accurate measurements and safe operation.
- Intended Use: For non-invasive measurement of systolic and diastolic blood pressure and pulse rate from the upper arm at home. Not for professional medical use.
- Contraindications: Do not use on an injured arm or if you have severe circulatory disorders. Consult your doctor.
- Precautions: Do not use near strong electromagnetic fields (MRI, mobile phones). Avoid excessive bending of the air hose.
- Batteries: Use only 4x AA batteries. Remove batteries if device will not be used for an extended period.
WARNING! This device is a supplement to, not a replacement for, regular medical check-ups. Always consult a physician for diagnosis and treatment.
Package Contents
- Microlife BP 3AP1-3E Blood Pressure Monitor (Main Unit)
- Universal Arm Cuff (22-42 cm)
- Instruction Manual (this document)
- 4 x AA Batteries (for initial use)
- Storage Case
- Note: AC Adapter is optional and sold separately.
CAUTION! Inspect contents upon unpacking. Do not use if any part appears damaged.
Device Overview
Front Panel (Display & Controls):
- LCD Display: Shows systolic/diastolic pressure, pulse, date/time, memory, user icon, battery indicator, WHO bar, IHD symbol.
- START/STOP Button: Starts and stops measurement.
- MEMORY (M) Button: Recalls stored measurements.
- SET Button: Sets date, time, and user selection (User 1 or User 2).
Side/Rear Panel:
- AC Adapter Socket: For optional external power (DC 6V).
- Battery Compartment: Holds 4x AA batteries.
- Cuff Port: Connects the air hose from the cuff.
Initial Setup
Before first use: Install batteries and set date/time.
- Insert Batteries: Open battery compartment on back. Insert 4 AA batteries observing correct polarity (+/-). Close cover.
- Set Date & Time: Press and hold the SET button for 3 seconds. Use START/STOP to adjust values (Year → Month → Day → Hour → Minute). Press SET to confirm each and exit.
- Select User: Briefly press SET button to toggle between User 1 and User 2 icon on display. Select the appropriate user before measuring.
- Connect Cuff: Plug the cuff tube firmly into the port on the side of the monitor.
Tip: For most accurate results, rest for 5 minutes before measuring. Avoid caffeine, exercise, and smoking for 30 minutes prior.
Taking a Measurement
Follow these steps for a correct reading. For 3x Average (MAM) mode, the device will automatically take three readings.
- Sit Correctly: Sit on a chair with back support, feet flat on the floor. Rest for 5 minutes.
- Apply Cuff: Place cuff on bare upper arm. The artery marker (▼) should align with the brachial artery on the inner arm. Cuff edge should be 2-3 cm above elbow. Secure snugly with Velcro.
- Position Arm: Rest arm on a table so the cuff is at heart level. Relax, palm facing up.
- Start Measurement: Press START/STOP button. The cuff will inflate automatically.
- Remain Still: Do not move or talk during inflation and measurement.
- Read Results: After deflation, systolic, diastolic pressure, and pulse rate display. The WHO bar graph will color-indicate the category. An Irregular Heartbeat symbol ( ) appears if detected.
- For MAM Mode: After the first reading, "MAM" and "2" will flash. Remain still. The device will automatically take two more readings after short pauses, then display the average of all three.
- Power Off: Device turns off automatically about 1 minute after last button press.
WARNING! Do not inflate cuff when not wrapped around arm. Excessive pressure can cause injury.
Memory Function
The device stores up to 99 measurements for two users (User 1 and User 2), each with date and time.
- Recall Memory: Press the MEMORY (M) button. The display shows the most recent reading for the selected user.
- Scroll: Press MEMORY again to scroll through previous readings in reverse chronological order.
- Check Average: After scrolling through all readings, the display shows the average of all stored values for that user.
- Clear Memory: To delete all memory for the current user, press and hold the MEMORY button for about 5 seconds while in memory mode until "0" appears. Memory for the other user remains intact.
Note: Ensure the correct user icon is selected before recalling memory.
Understanding Your Readings
Refer to the WHO (World Health Organization) classification bar on the display:
| Color Zone | Category | Systolic (mmHg) | Diastolic (mmHg) |
| Green | Optimal/Normal | < 120 | < 80 |
| Yellow | High-Normal | 120-129 | 80-84 |
| Orange | Grade 1 Hypertension | 130-139 | 85-89 |
| Red | Grade 2 Hypertension | 140-159 | 90-99 |
| Dark Red | Grade 3 Hypertension | ≥ 160 | ≥ 100 |
Irregular Heartbeat Symbol ( ): If this flashes during or after measurement, it detected a possible pulse irregularity. Note: Occasional symbols may not be significant, but frequent occurrences should be discussed with your doctor.
Important: A single high reading is not a diagnosis. Track readings over time and share the memory data with your physician.
Care & Maintenance
Proper care ensures longevity and accuracy.
- Cleaning: Wipe monitor and cuff with a soft, slightly damp cloth. Do not immerse in water or use solvents. Disconnect cuff before cleaning.
- Storage: Store in the provided case in a cool, dry place. Avoid extreme temperatures, humidity, dust, and direct sunlight.
- Cuff Care: Do not fold the cuff tightly or twist the air tube excessively.
- Batteries: Replace batteries when the low battery icon ( ) appears on display. Remove batteries if not using for several months.
- Accuracy Check: Have the monitor checked for accuracy by an authorized service center every 2 years.
CAUTION! Do not attempt to repair, disassemble, or modify the device. There are no user-serviceable parts inside.
Specifications
- Measurement Method: Oscillometric, automatic inflation/deflation.
- Measurement Range: Pressure: 0 - 299 mmHg; Pulse: 40 - 199 beats/min.
- Accuracy: Pressure: ±3 mmHg; Pulse: ±5% of reading.
- Memory: 99 readings for 2 users (total 198), with date & time.
- Cuff Size: Universal cuff 22 - 42 cm (8.7" - 16.5").
- Power Supply: 4 x 1.5V AA batteries or optional AC adapter (DC 6V, 1A).
- Battery Life: Approx. 500 measurements (without backlight).
- Dimensions (Unit): Approx. 128 mm (W) x 105 mm (H) x 57 mm (D).
- Weight (Unit): Approx. 285 g (without batteries).
- Operating Conditions: 10°C to 40°C, 15% to 90% RH (non-condensing).
Troubleshooting
| Symptom | Possible Cause | Corrective Action |
| Display is blank | Batteries dead/incorrectly installed; Device off | Replace/check batteries; Press START/STOP to turn on. |
| Error Code "E1" or "E2" | Cuff not connected or leaking; Cuff too loose | Check cuff connection; Wrap cuff snugly. Restart. |
| Error Code "E3" or "E4" | Measurement error; Movement during reading | Ensure arm is still at heart level. Repeat measurement. |
| Irregular readings | Incorrect posture; Talking/moving; Cuff position | Sit correctly, rest 5 mins, ensure cuff at heart level, remain silent. |
| Battery icon flashes | Low battery | Replace all 4 batteries with new ones. |
| Memory not recalling | Wrong user selected; Memory empty | Press SET to select correct user icon. Ensure readings were stored. |
| Device does not inflate | Blocked air tube; Severe battery depletion | Check tube for kinks. Replace batteries. |
Reset: Remove batteries for 5 minutes, then reinsert. This will clear all settings (date/time/memory) and restore factory defaults.
Service: For persistent issues, contact Microlife customer service or an authorized dealer. Do not open the device.
Microlife BP 3AP1-3E Blood Pressure Monitor User Manual © - All Rights Reserved 2025