Microlife N1 Basic Blood Pressure Monitor User Manual

The Microlife N1 Basic is an automatic upper-arm blood pressure monitor designed for easy and accurate home use. It features one-touch operation, a large LCD display, irregular heartbeat detection, WHO blood pressure classification indicator, memory storage for up to 30 readings, and a comfortable D-ring cuff. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Main unit with LCD display, D-ring cuff with air tube, Instruction manual, Storage case, 4 x AA batteries.

Safety Information

Read all instructions before use. For accurate results, proper use is essential.

1. Intended for home use only. Not for professional medical diagnosis.
2. Do not use on infants, small children, or persons unable to express themselves.
3. Consult your doctor before use if you have arrhythmia, pre-eclampsia, or other circulatory disorders.
4. Do not use the monitor near strong electromagnetic fields (e.g., mobile phones, microwave ovens).
5. Do not inflate the cuff when not wrapped around the arm.

WARNING! This device is not a toy. Keep away from children. Do not disassemble or modify the device.

Parts Identification

Familiarize yourself with the main components of your monitor.

1. Main Unit: Contains the display, START/STOP button, and memory button.
2. LCD Display: Shows systolic/diastolic pressure, pulse rate, icons, and memory number.
3. D-Ring Cuff: Velcro-fastened cuff with air tube connector and artery marker.
4. Air Tube: Connects the cuff to the main unit.
5. Battery Compartment: Located on the back of the main unit.
6. AC Adapter Socket: For optional power adapter (not included).

CAUTION! Ensure the air tube is securely connected before each use.

Initial Setup

Prepare your monitor for first use.

1. Insert Batteries: Open the battery compartment on the back. Insert 4 new AA batteries, observing correct polarity (+/-).
2. Connect Cuff: Plug the air tube connector firmly into the socket on the side of the main unit.
3. Set Date & Time: Press the MEMORY button for 3 seconds. Use the START/STOP button to adjust values. Press MEMORY to confirm.
4. Test: Press START/STOP without the cuff on your arm. The display should light up, and the cuff should inflate slightly and then deflate. This is a system check.

Tip: For most accurate results, use the monitor at the same time each day in a quiet environment.

Taking a Measurement

Follow these steps carefully for a reliable reading.

1. Prepare: Rest for 5 minutes before measuring. Sit comfortably with feet flat on the floor. Avoid talking or moving during measurement.
2. Apply Cuff: Place cuff on bare left upper arm. The artery marker (▼) should align with your brachial artery. The tube should run down the center of your inner arm. Wrap cuff snugly, leaving 1-2 cm gap at the top.
3. Position Arm: Rest your arm on a table so the cuff is at heart level. Relax your hand, palm up.
4. Start Measurement: Press the START/STOP button. The cuff will inflate automatically. Remain still and quiet.
5. Read Results: When measurement is complete, the cuff will deflate. Your systolic pressure, diastolic pressure, and pulse rate will be displayed. The result is automatically saved.
6. Power Off: The monitor turns off automatically after 1 minute.

WARNING! Do not inflate the cuff more than once within 5 minutes, as this may cause discomfort or inaccurate readings.

Understanding Your Results

The LCD display shows key information and symbols.

• Systolic Pressure: Top number (e.g., 120).
• Diastolic Pressure: Bottom number (e.g., 80).
• Pulse Rate: Beats per minute (e.g., 72).
• WHO Indicator: Color bar on the right side shows classification (Green: Normal, Yellow: Mild Hypertension, Red: Moderate/Severe Hypertension).
• Irregular Heartbeat Symbol (♥): Flashes if an irregular rhythm is detected during measurement. Consult your doctor if this appears frequently.
• Memory Number (M): Shows which memory position the reading is stored in (1-30).
• Low Battery Symbol: Appears when batteries need replacement.

Note: A single reading is not diagnostic. Track your readings over time and share them with your healthcare provider.

Memory Function

The monitor stores the last 30 readings with date and time.

1. View Memory: Press the MEMORY button briefly. The most recent reading appears. Press MEMORY repeatedly to scroll through all stored readings.
2. Clear All Memory: With the device OFF, press and hold the MEMORY button for 5 seconds until "CLr" appears on the display. All memory will be erased.
3. Average of Last 3 Readings: While scrolling through memory, the display will show "AVE" and the average of the last three measurements taken in the same session.

Tip: Use the memory log to track your blood pressure trends for your next doctor's visit.

Battery Information

Power source: 4 x 1.5V AA batteries (LR6).

• Battery Life: Approximately 300 measurements (alkaline batteries).
• Low Battery Indicator: A battery icon appears on the display. Replace all 4 batteries promptly.
• Replacement: Use new, same-type batteries. Do not mix old and new batteries.
• AC Adapter (Optional): Use only the specified Microlife AC adapter (Model: MVA-05). Insert the plug into the DC socket on the side of the monitor.

CAUTION! Remove batteries if the monitor will not be used for an extended period. Do not use rechargeable batteries unless specified as compatible.

Care & Cleaning

Proper care ensures longevity and accuracy.

1. Remove batteries before cleaning.
2. Clean the monitor and cuff with a soft, slightly damp cloth. Do not immerse in water.
3. Do not use alcohol, benzene, thinners, or abrasive cleaners.
4. Store the monitor in its case in a cool, dry place away from direct sunlight and extreme temperatures.
5. Do not bend or kink the air tube.

CAUTION! Never wash or soak the cuff. Do not attempt to repair the device yourself.

Troubleshooting

Reset: Remove batteries for 1 minute, then reinsert.

Service: For technical support, contact Microlife customer service. Do not open the device.

Specifications

• Measurement Method: Oscillometric, automatic inflation and deflation.
• Measurement Range: Pressure: 0-299 mmHg, Pulse: 40-199 beats/min.
• Accuracy: Pressure: ±3 mmHg, Pulse: ±5% of reading.
• Cuff Size: 22-32 cm arm circumference.
• Memory: 30 readings with date and time stamp.
• Power Supply: 4 x 1.5V AA batteries or optional AC adapter (6V DC).
• Dimensions: Approx. 118mm (W) x 105mm (H) x 62mm (D).
• Weight: Approx. 300g (without batteries).
• Operating Conditions: 10°C to 40°C, 15% to 90% relative humidity (non-condensing).
• Storage Conditions: -20°C to +60°C, ≤ 93% relative humidity.