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Introduction

Thank you for purchasing the OMRON Digital Weight Scale HN-300T2.  

This product is mainly designed for general household use. 

Safety Instructions

This instruction manual provides you with important information about the OMRON 

Digital Weight Scale. To ensure the safe and proper use of this product, READ and 

UNDERSTAND all of these instructions. 

If you do not understand these instructions 

or have any questions, contact your local OMRON representative before 

attempting to use this product. For specific information about your own weight, 

consult with your physician.
Intended Use

The OMRON Digital Weight Scale HN-300T2 is intended to measure and display body 

weight. It is intended for home use only.

Receiving and Inspection

Remove this product and other components from the packaging and inspect for damage. If 

this product or any other components are damaged, DO NOT USE and consult with your local 

OMRON representative.

Important Safety Information

Read the Important Safety Information in this instruction manual before using this 

monitor.

Follow this instruction manual thoroughly for your safety.

 Warning

Indicates a potentially hazardous situation which, if not 

avoided, could result in death or serious injury.

•  Consult with your physician or healthcare provider before beginning a weight reduction 

or exercise program.

•  Stop using the scale and consult your doctor if you experience skin irritation on your 

foot or feet.

•  DO NOT use the scale on slippery surfaces, such as a wet floor.

•  Keep the scale out of the reach of infants, toddlers and children.

•  DO NOT jump on the scale. Doing so may cause you to fall or slip, resulting in serious 

injury.

•  DO NOT use the scale when your body and/or feet are wet, such as after taking a bath 

or shower.

•  DO NOT step on the edges or display area of the scale because you may lose your 

balance and fall, resulting in serious injury.

•  Persons with disabilities or persons who are physically frail should be assisted by 

another person when using the scale to prevent falling when stepping on and off the 

scale.

•  DO NOT put your fingers into any openings or inside the scale.

•  Use indoors.

•  DO NOT use the scale for purposes other than described in this manual.

•  DO NOT use the scale with other medical electrical (ME) equipment simultaneously. 

This may result in incorrect operation of the devices and/or cause an inaccurate 

reading.

•  DO NOT damage the glass because it may break and result in an injury.

Battery Usage

•  If battery fluid leaks and contacts your eyes, skin or clothing, immediately rinse with 

plenty of clean water. Contact your physician if battery fluid contacts your eyes or skin.

Data Transmission

•  This product emits radio frequencies (RF) in the 2.4 GHz band. DO NOT use this 

product in locations where RF is restricted, such as on an aircraft or in hospitals.

 Caution

Indicates a potentially hazardous situation which, if not 

avoided, may result in minor or moderate injury to the user or 

patient, or cause damage to the equipment or other property.

•  Clean the scale before use if it has been used by people with a skin disease on their 

feet.

•  DO NOT place the scale against a wall because an injury or malfunction of the scale 

may occur.

•  DO NOT attempt to disassemble, modify or repair the scale.

•  DO NOT place the scale on a cushioned floor surface such as a carpet or mat because

a measurement may not be accurate.

•  DO NOT submerge the scale or any of the components in water.

•  DO NOT place the scale near heat sources or below air conditioners. 

•  Avoid exposure to direct sunlight.

•  Avoid excessive impact, vibration and strong shock to this scale.

•  DO NOT wash the scale with water.

•  DO NOT wipe the scale with benzene, gasoline, paint thinner, or other volatile 

solvents.

•  DO NOT place the scale where it will be exposed to chemicals or corrosive vapors.

•  Store the scale on a level surface.

•  DO NOT store any objects on the scale.

Battery Usage

•  Replace worn batteries with new ones immediately.

•  DO NOT expose the batteries to flames or fire.

•  DO NOT insert the batteries with the polarities in the wrong direction.

•  ONLY use 4 “AAA” manganese or alkaline batteries with the scale. DO NOT use 

other types of batteries. DO NOT use new and used batteries together. Replace all 

4 batteries at the same time.

•  DO NOT use different types of batteries together.

•  Dispose of the device, batteries, components according to applicable local regulations. 

Unlawful disposal may cause environmental pollution.

•  Remove the batteries if the scale will not be used for three months or more.

•  DO NOT use batteries after their expiration date.

Data Transmission

•  During measurement, make sure that no mobile device or any other electrical devices 

that emit electromagnetic fields is within 12 inches (30 cm) of the scale. This may 

result in incorrect operation of the scale and/or cause an inaccurate reading.

•  DO NOT replace the battery while your measurement result is being transferred to 

your smart device. This may result in the incorrect operation of the scale and failure to 

transfer your measurement result.

•  DO NOT place integrated circuit cards, magnets, metal objects, or other devices that 

emit electromagnetic fields near the scale while your measurement result is being 

transferred to your smart device. This may result in the incorrect operation of the scale 

and failure to transfer your measurement result.

1. Know Your Device

Contents:

• Digital Weight Scale  • 4 “AAA” Manganese Batteries  • Instruction Manual

Start Up Guide

Main Unit:

Display:

A

 Battery symbol

(low/depleted)

D

 OK symbol

C

 Weight metric 

symbol

E

 SYNC symbol

B

 Connection 

symbol

Display symbols:

A

Flashes when batteries are low.
Appears when batteries are depleted.

B

Flashes/appears when the scale is being connected to your smart 

device or readings are being transferred, or when restoring the 

scale to the default settings.

C

Flashes/appears when selecting weight metric and appears during 

your measurement.

D

Flashes when the scale is connected to your smart device or 

readings are transferred successfully.

E

Appears if your reading was not transferred successfully when the 

scale has been paired with your smart device.

2. Before Taking a Measurement

2.1  Installing Batteries

1.  Open the battery cover on the back of the scale.

2.  Install the batteries following the correct 

polarities as shown to the right and inside 

the battery compartment.

3.  Close the battery cover.

Note:

•  When the “

 ” symbol appears and “A1” appear, replace all 4 batteries with new 

ones. Items stored in memory will be saved even if the batteries are removed.

•  Place the scale on a hard, flat and level floor immediately after installing the 

batteries. The scale is calibrated automatically.

•  Disposal of used batteries should be carried out in accordance with your local 

regulations for the disposal of batteries.

Plate

Display

Front

Battery cover

SET button 

Bluetooth button 

Back

Digital Weight Scale

HN-300T2

Instruction Manual

5671263-6A

2.2  Pairing the Scale with a Smart Device

If you want to transfer the reading, follow the below instructions.

This scale can be paired with 2 smart devices and 2 people can manage the 

measurement data.

1. Enable the Bluetooth on your smart device.

2. Download and install the “OMRON connect” app onto your smart device.

If you already have the “OMRON connect” app and have created your

account, open the app and add your new scale.

3. Open the app and follow the pairing instructions shown on your smart device.

•  Make sure that your scale is within 5 m of your smart device.

4. Press the [Bluetooth] button (the side of the scale) 

for more than 2 seconds to connect to your smart 

device.

The “   ” symbol and “P” symbol flash on the 

display.

5. Confirm that the scale is connected successfully.

When the scale is connected successfully to your 

smart device, the “ 

 ” symbol flashes.

Note:

•  When the “Err” appears, follow the instructions in the 

app.

•  The scale will automatically turn off after 10 seconds.

•  Be aware that OMRON will not be responsible for the 

loss of data and/or information in the app.

• “OMRON connect” is the only app that we recommend for use with your scale 

for transfer data correctly.

• This scale can store up to 2 pairing information. 

3. Taking a Measurement

It is recommended to measure your weight at the same time each day for consistency.

1. Place the scale on a hard, flat and level floor.

Note:

• Do not place the scale on a cushioned surface such as a carpet or a mat.

2. Step onto the scale when it is turned off and 

take a measurement.

The power is automatically turned on and the 

measurement will start. 

Note:

•  Remain still during your measurement.

3. When your weight flashes, your measurement is 

complete.

4. Step off of the scale.

The scale will automatically turn off after 10 seconds.

If you want to transfer your reading, refer to section 4.

4. Transferring Your Reading

Open the app on your smart device. 

4.1  Transferring Your Reading Automatically

Your reading will be transferred to your smart device automatically within 30 minutes 

after the scale is turned off.

Note:

•  If your reading is transferred before the scale is turned off, the display shows as 

below with the “   ” symbol showing on the display during the transfer.

The scale will automatically

turn off.

Transferring  the  reading.    

The transfer is completed.

4.2  Transferring Your Reading Manually

To transfer the readings manually, press the [Bluetooth] button during the power is off.

The “   ” symbol appears from the start of transferring to the end.

The scale will automatically

turn off after 10 seconds.

Transferring  the  reading.    

The transfer is completed.

Note:

•  If the “  ” symbol does not appear, refer to “The data is not being transferred.” in 

section 6 for more detail.

•  This scale will store up to 30 readings. Stored readings cannot be viewed on the 

scaleʼs display. You can view your readings on the app after transferring. 

•  When the “   ” symbol appears on the display, your reading was not transferred. 

Transfer the readings immediately before the oldest reading is deleted.

5. Restoring the Scale to the Default Settings

To delete all information stored in the scale, follow the instructions below. Make sure that 

the scale is turned off.

1. Press the [Bluetooth] button for more than 2 seconds.

The display flashes as shown on the right.

2. Press the [Bluetooth] button again for more than 5 

seconds.

The display flashes as shown on the right and the 

“   ” symbol stops flashing.

3.  Press the [SET] button.

When the display stops flashing, the scale is restored 

to the default settings.

Note:

•  The scale will automatically turn off after 10 seconds.

•  Restoring to the default setting of the scale does not delete the information in the 

app.

6. Error Messages and Troubleshooting

If any of the below problems occur during a measurement, check to make sure that no 

other electrical device is within 30 cm. If the problem persists, refer to the table below.

Display/Problem

Possible Cause

Solution

Appears

The scale cannot connect to a 

smart device or transfer data 

correctly.

Follow the instructions 

shown in the app. If the “Err” 

still appears after checking 

the app, contact OMRON 

customer service.

Appears

You moved during a 

measurement.

Step off of the scale and it 

will automatically turn off 

after 10 seconds, then take a 

measurement again.

You took a measurement in the

room under the effect of strong

magnetic fields.

Take a measurement again in

another room.

/

Appears

Device error. 

Contact OMRON customer 

service.

Appears

Your body weight is out of the measurable range.

Appears

Misalignment during 

autocalibration.

Repeat the measurement.

Appears

Your reading was not transferred.

Transfer your readings to the

app. Refer to section 4 for 

more information. After 

your readings have been 

successfully transferred, this 

symbol will disappear. 

Flashes

Batteries are low.

Replacing all 4 batteries with 

new ones is recommended. 

Refer to sub-section 2.1.

,

Appears

Batteries are depleted.

Immediately replace all 

4 batteries with new ones.

Refer to sub-section 2.1.

Stepping onto the 

scale does not turn it 

on.

Batteries are depleted.

Battery polarities are not properly 

aligned.

Check the battery installation 

for proper placement.

Refer to sub-section 2.1.

The user’s weight is less than 

10 kg.

This scale requires a weight 

load of 10 kg or higher to 

automatically turn on. If the 

user weighs less than 10 kg, 

place an object that weighs 

10 kg or higher to turn the 

scale on, and then proceed to 

take a weight measurement.

The data is not being 

transferred.

Connection failure.

After checking that there are 

no sources of interference 

nearby, move the receiving 

device to a distance within 5 

m of the scale. 

If the problem still persists, 

refer to the “Help” section in 

the “OMRON connect” app 

for further help.

Your measurement 

result is higher or 

lower than the actual 

value.

Your result varies 

widely for each 

measurement.

You take a measurement on a 

carpet or cushioned floor surface, 

or an uneven floor.

Ensure the monitor is correctly 

placed on a hard, flat and 

level floor.

The scale did not properly auto-

calibrate.

Calibrate your scale. Refer to 

section 8.

5671263-6A_HN300T2-AP_IM_M04_210121.pdf

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