Microlife BP 3AS1-2 Blood Pressure Monitor User Manual

The Microlife BP 3AS1-2 is an automatic upper arm blood pressure monitor designed for accurate and convenient home use. It features a large, easy-to-read LCD display, one-touch operation, irregular heartbeat detection, 2-user memory with 60 measurements each, WHO blood pressure classification indicator, date/time display, and an adjustable cuff for arm circumferences 22-42 cm. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Safety Information 3. Package Contents 4. Device Overview 5. Initial Setup 6. Taking a Measurement 7. Understanding Results 8. Memory Function 9. Care & Maintenance 10. Technical Specifications 11. Troubleshooting

Features at a Glance

Key components: Main unit with LCD display, Adjustable upper arm cuff, AC adapter port, Battery compartment, START/STOP button, Memory (M) button, Date/Time (D/T) button.

Feature	Description
One-Touch Operation	Automatic inflation and deflation with single button press
WHO Indicator	Color-coded display based on WHO blood pressure classification
Irregular Heartbeat Detection (IHD)	Detects and displays symbol for irregular pulse during measurement
2 x 60 Memory	Stores 60 measurements for each of two users
Large LCD Display	Clear display of systolic, diastolic pressure, pulse, and date/time
Adjustable Cuff	Fits arm circumferences from 22 cm to 42 cm (9" to 16.5")
Automatic Power Off	Conserves battery life by turning off after 1 minute of inactivity
AC Adapter Option	Can be powered by included AC adapter (optional in some regions)
Date & Time Stamp	Records measurement with date and time for tracking
Average Value	Calculates average of last 3 measurements for each user

Safety Information

Read all instructions before use. For personal home use only.

Do not use on infants, children, or persons unable to express their will.
Consult your physician before use if you have arrhythmia, atherosclerosis, or other circulatory disorders.
Do not use during or immediately after physical exertion.
Do not wrap cuff over clothing; ensure it is directly on bare skin.
Keep device away from strong electromagnetic fields (e.g., mobile phones, microwaves).

WARNING! This device is not a substitute for professional medical diagnosis. Always consult your doctor about your blood pressure.

Package Contents

Microlife BP 3AS1-2 Monitor: 1 unit.
Upper Arm Cuff: 1 piece (pre-connected tube).
Instruction Manual: This document.
Quick Start Guide: 1 sheet.
Storage Case: 1 piece (model dependent).
4 x AA Batteries: (or AC adapter depending on region).
Warranty Card: 1 piece.

CAUTION! Inspect contents upon unboxing. Do not use if any part is damaged.

Device Overview

Front Panel: LCD Display, START/STOP button.

Side Panel: Memory (M) button, Date/Time (D/T) button.

Back Panel: Battery compartment cover, AC adapter socket (DC 6V), cuff connector port.

Display Symbols: User 1/2 icon, Memory full icon, Battery icon, Heart symbol with "IHD" for irregular heartbeat, WHO color bar (Green/Yellow/Red), Systolic/Diastolic values, Pulse rate, Date & Time.

Initial Setup

Before first use, install batteries or connect AC adapter, set date/time, and select user.

Power: Insert 4 AA batteries (observe polarity) or connect AC adapter.
Set Date/Time: Press and hold D/T button. Use START/STOP to adjust values, press M to confirm and move to next setting.
Select User: Press M button to toggle between User 1 and User 2. Corresponding icon will appear on display.
Apply Cuff: Place cuff on bare upper left arm (approx. 2 cm above elbow). Ensure tube runs down center of arm. Secure with Velcro.

Tip: Rest for 5 minutes before first measurement. Sit comfortably with feet flat on floor.

Taking a Measurement

For most accurate results, measure at the same time each day.

Sit in a quiet place. Rest for 5 minutes. Avoid talking or moving during measurement.
Wrap cuff correctly on left arm. Arm should be relaxed on a table, palm up, cuff at heart level.
Press START/STOP button. Device will inflate automatically.
Remain still and quiet. Cuff will deflate automatically.
Results (Systolic, Diastolic, Pulse) will display with WHO indicator. "IHD" symbol may appear if irregular heartbeat is detected.
Measurement is automatically stored in memory for the selected user.
Device powers off automatically after 1 minute.

WARNING! Do not inflate cuff without it being properly wrapped on the arm.

Understanding Results

The display shows three main values and classification.

Systolic Pressure: Top number (e.g., 120). Pressure when heart beats.
Diastolic Pressure: Bottom number (e.g., 80). Pressure when heart rests between beats.
Pulse Rate: Beats per minute (e.g., 72).
WHO Indicator Bar: Green (Normal), Yellow (Mild/Moderate), Red (Severe).
IHD Symbol: Appears if an irregular heartbeat is detected during measurement. Consult your physician if this appears frequently.

Refer to the included WHO classification chart for detailed ranges.

Memory Function

Stores 60 measurements for each of two users (120 total).

View Memory: Press M button once. The last measurement for the selected user appears.
Scroll Memory: Press M button repeatedly to scroll through all stored measurements for that user in reverse chronological order.
View Average: After scrolling through all readings, the display will show "AVG" and the average of the last 3 measurements.
Clear Memory: To clear memory for the selected user, remove batteries while the memory screen is displayed. All data for that user will be erased.
Memory Full: A "MEM FULL" icon appears when 60 measurements are stored. Oldest reading is automatically overwritten by the 61st.

Care & Maintenance

Unplug AC adapter or remove batteries before cleaning.

Cleaning: Wipe monitor and cuff with a soft, slightly damp cloth. Do not immerse in water or use solvents.
Storage: Store in a cool, dry place. Do not bend the air tube sharply. Keep away from direct sunlight and heat sources.
Batteries: Replace all 4 batteries when low battery icon appears. Use alkaline batteries. Remove batteries if device will not be used for an extended period.
Cuff: The cuff is not washable. Keep it clean and dry. Check for cracks or leaks periodically.

CAUTION! Do not attempt to disassemble or repair the device yourself.

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: 2 x 60 measurements with date and time.
Cuff Size: 22 - 42 cm arm circumference.
Power Supply: 4 x 1.5V AA batteries or DC 6V AC adapter.
Automatic Shut-off: Approx. 1 minute after last operation.
Operating Conditions: 10°C to 40°C, 15% to 90% relative humidity (non-condensing).
Dimensions & Weight: Approx. 128mm (W) x 105mm (H) x 62mm (D), ~300g (without batteries).

Troubleshooting

Symptom	Possible Cause	Corrective Action
No display	Dead batteries, loose connection	Replace all 4 batteries; ensure battery compartment is closed securely.
Error Code "E" appears	Cuff not attached, air leak, movement during measurement	Ensure cuff is connected; wrap cuff snugly; remain still and retry.
Inconsistent readings	Incorrect posture, talking/moving, cuff position	Sit correctly with arm at heart level; rest beforehand; ensure proper cuff placement.
Device does not inflate	Blocked tube, weak batteries	Check tube for kinks; replace batteries.
"IHD" symbol appears often	Irregular heartbeat, movement artifact	Ensure you are still. Consult your physician for evaluation.
Memory not storing	Memory full, wrong user selected	Clear memory for current user; press M to select correct user icon before measuring.

Reset: Remove batteries for 1 minute to perform a full reset.

Service: For technical support, contact Microlife customer service or visit www.microlife.com. Do not open the device.