NAMU ALEX-N5 User manual

User Guide
Model: ALEX-N5
Version 1.0

Table of Contents
Parts 4
About This Guide 4
Power On/Off 5
Wearing 6
How to Properly Wear an ALEX 7
Improper Wearing of ALEX 8
Vibrating Reminding 9
Charging 10
Requirements 11
App Installation 11
1. Sign up 12
2. Register Device 12
3. Calibration 13
ALEX APPLICATION 14
1. Data View 14
2.AVATAR MODE 15
3. Settings 15
3-1. Calibration 16
3-2. Reminding Time 16

3-3. Poor posture angle 17
4. Challenge 17
5. My Page 18
SPECIFICATION 19
1. Exterior Specification 19
2. Hardware Specification 19
3. Other Specification 19
IMPORTANT NOTES 20
Tips for Managing and Wearing the ALEX 20
Safety Guideline 21
Notes for Internal Battery 21
Remedies 22
Warranty Service 22
Exempted and Limited Warranty 22
Implied Warranty 23
Limited Liability 23
Governing Law 23
EXCHANGE OR RETURN 24
A/S INFORMATION 24

Start
ALEX is a smart wearable device that measures the posture of neck and head in a real time manner
to alert users at their bad posture, thereby inducing the users to have a good posture in a daily life.
Parts
ALEX-N5 Parts:
ALEX-N5
Usb Cable
Pouch
About This Guide
This user guide is designed to guide the users to quickly set up ALEX-N5. ALEX can synchronize
the data with mobile application. The detailed information is imported from statistical records. This
device allows the users to track the changes of posture and change the vibration reminder and alarm.

Power On/Off
As shown in the above figure, blue LED is blinking and power is turned on with vibration by
pressing the button in the front.
- Red LED is blinking without vibration and power light is ON if pressing the button shortly while
power is ON.
Red LED is blinking and turned off with vibration if pressing the button at least 2 seconds while
power is ON.
If device is placed on a static position while power is ON, the device is automatically turned
OFF about 8 minutes later for battery saving (automatic OFF).

Wearing
1) Adjust the above areas marked with an arrow fit into your head size to control the legs.
2) Hold the device with both heads to hang back wheels on your back. ALEX should be located at a
horizontal angle to a center hairline in the back of your neck.
3) Move your neck if anything is uncomfortable to you. Check if device is unintentionally taking off.
※ALEX main body placed on the collar or hang in the back of neck may cause its improper
operation.

How to Properly Wear an ALEX
1) ALEX should be located at a horizontal angle to a center hairline in the back of your neck. After
wearing it, adjust the length of legs to place them at a horizontal angle to the end hairline in the
center of your neck in order to help ALEX properly operate.
2) The overall sides of sensor in ALEX should touch the back of your neck. It fails to accurately
measure your posture if sensor is lean on one side or is not properly touching the neck.
3) Run AVATAR mode in the application to check if you properly wear an ALEX. Move your neck to
front or back to check if AVATAR is properly working.
The location of sensor to be
touched with the back of your neck

Improper Wearing of ALEX
1) If sensor is slanted, or higher or lower than the end hairline
2) If sensor is being pressed due to tightly worn device
3) If device is not properly fit into the neck so it is not touching the surface of your neck, or only the
upper side of sensor is touching the neck
(Good)
(Bad)

Vibrating Reminding
ALEX provides vibrating reminder to users if keeping bad posture for a certain period of time
in order to help user to keep a correct posture.
The pivoting mechanism of ALEX can detect both postures: 1) Text Neck –lowering the
head; and 2) Forward Head Posture: moving head to the front.

Charging
* Open the cover located at the lower ALEX and connect a micro USB cable for charging.
If it starts charging, red LED is turned on to inform users of charging.
If it is completely charged, the blue LED is turned on to inform users of the completion of
charging.
※It may depend on the performance of charger but it usually takes about 2 to 3 hours to fully
charge the device.
※AELX is automatically turned off if the remaining battery is not sufficient.

Mobile Connect (iOS/Android)
ALEX-N5 can be set up through ALEX application for each iOS and Android.
Requirements
ALEX is compatible to any mobile models if the following specifications are met.
- iOS 8.0 or higher, and iPhone 4S or later version
- Android 4.4(KitKat or Lollipop) or higher, and the device supports Bluetooth 4.0(BLE) or higher
Please refer to the homepage (www.alexposture.com) for more detailed information on
compatible smartphone models.
App Installation
Set ALEX based upon the purpose of user’s use. Install ALEX app in your smartphone to
manage your posture data.
* The device is operated with the default settings at launching if not reset.
Search “ALEX posture coach” in the apps tore or play store and download the
app on the right for the installation.
App download link:

1. Sign up
1) 1) The user can sign up
using the account in
Facebook, Google+ or
e-mail.
2) Enter the simple information to
complete the sign up.
3) Simply log-in to start ALEX
app after first sign-up.
2. Register Device
* Please turn on Bluetooth in Smartphone before connecting.
※Please check the following is ALEX app fails findingALEX device.
- Check if ALEX is turned on.
- Check if ALEX battery is fully charged.
- Check if ALEX app and ALEX are located close to each other.
1) Double-click the power button to connect it with
the app.
2) Press a NEXT to move onto the following
settings.

3. Calibration
* Follow the direction given by app after ALEX is completely connected to app.
(Please refer to “START”section in this guide for more detailed information on how to properly wear
ALEX)
1) Adjust the legs fit into user’s
head size.
2) Hold ALEX with both
hands to hang the legs over
user’s ear.
3) Place ALEX at horizontal angle
to the end of hairline in the center
of your neck.
4) Get into a good posture and
wear an ALEX.
5) Stand properly and touch
the OK button.
6) Your correct posture is
successfully set up.

ALEX Application
1. Data View
The users can check the daily and weekly postures through the graph displayed in the first screen of
ALEX app.
※It is important to maintain a good posture in a daily life; however, it is not good to maintain a specific
posture for a long time. Do not sit down for a long time but stand up and move your body on a regular basis.
Touch the black circle in the above graph to check the hourly postures throughout a day.
Yellow green bar graph: Hourly cumulative times of good posture kept in a day
Green bar graph: Hourly cumulative of active posture in a day
Green dotted line: User’s goal (Challenge)
Slide this part to left and right to check the weekly changes of
posture.
Click the black circle to check the hourly changes of posture on a
specific date.
Press this button to refresh the posture data.
Press the date in the center to check a posture of the day. Use the
arrows located at the both sides to check the graph of the other day.

2. AVATAR MODE
* The users are allowed to check the neck posture on a real-time manner through AVATAR mode in
the menu.
※If AVATAR mode is not properly working, the user is highly likely worn it in improper way. Please refer
to the “Wearing”in this user guide to learn how to wear it properly.
3. Settings
* ALEX can be set at the settings in the menu upon user’s preference.
Calibration:
The accuracy of posture measurement in ALEX highly
depends on the method and posture of wearing. The users
can set their correct postures on a regular basis through
Calibration in the menu.
Reminding Time:
Vibration alarm can be set upon the user’s prefer time.
Poor PostureAngle:
The angles to receive the vibration alarm can bet set in the
ALEX. Manage your posture in more strictly and
comfortably.

3-1. Calibration
The accuracy of measurement in ALEX highly depends on the method and posture of wearing. The
users can reset their correct posture as it was in the first setting in the ALEX. Properly and accurately
manage your postures on a regular basis through the calibration!
3-2. Reminding Time
The users can change the settings, i.e. the reminding time for incorrect posture, power ON/OFF for
vibration and vibration remaining time. Change the settings in ALEX based on your preference and
circumstance.
Reminding Time: Remaining time of poor posture
Vibration
On/Off
Vibration: Reminding time of vibration
Reset: Reset to default setting

3-3. Poor posture angle
At the poor posture angle in the setting dialog, the users can set the angle to receive the vibration to help
them voluntarily change their posture habit to good one. ALEX provides vibration if posture goes beyond
a specific angle at a certain time.
4. Challenge
Set your weekly goal for ALEX Score that is calculated considering the setting angle, real-time posture
and wearing time of ALEX through the Challenge in the menu.
* The goal points are marked in green dotted line in the posture data at the upper home screen.
Touch this area to set your goal.
Red triangle: Currently set poor posture
White circle: Poor posture to be newly set

5. My Page
* The users can check the firmware information, log out or delete the account in My Page.
Add your ALEX
Currently registered and used ALEX
Registered but currently unused ALEX
Sign out (log-out)
Delete currently registered account

Specification
1. Exterior Specification
2. Hardware Specification
Processor
32-bit ARM® Cortex™-M0(nRF51822)
Operating Temperature
50°C
Display
LED BLUE and RED
Memory
Int.ROM : 256KB, Int.RAM : 16KB, Ext.Flash : 64KB
Sensor
10bit,digital,triaxial acceleration sensor(BMA250)
Bluetooth
Bluetooth low energy 2.4GHz RF
Switch
Tact switch
Battery
Lithium-Polymer 110mA, 4.0x12x30mm
Battery lifespan
7 days
Power consumption
Active(ON) : 0.84mA / Sleep (OFF) : 0.04mA
3. Other Specification
Smartphone compatibility O/S
iOS 8 or higher / Android 4.4 or higher
Manufacturing Date / Country
April 2016 / Korea
Size
(W x Lx H) 80 X [105~160] X [100~170]mm
Weight
25g
Color
Black
Material
Sensor: ABS, PC / Leg: Silicon
UI
LED with 3

Important Notes
Tips for Managing and Wearing the ALEX
Use a clean, dry and soft fabric to clean the device on a regular basis. ALEX is not a waterproof
device; therefore, it should avoid contacting with liquid. Soft neutral detergent can be used to
clean the device but liquid should not get into button area.
Do not be too conscious of ALEX while wearing. Wear it comfortably. If you are too conscious
of it, your neck will be stiffening so is not good for your health.
Do you wearALEX for more than 24 hours to refresh skin contacting area with fresh air.
Do not open the cover to disassembleALEX.
The battery is embedded in the device. Do not improperly discard it.
Do not put device into dish washer, laundry or dryer.
Do not expose this device in extremely hot or cold temperature.
Do not store the device under direct sunlight for a long time.
The device may be explored in the fire.
Do not wear ALEX while charging.
Do not chargeALEX if it is wet.
Do not wear the device if it is heated.
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