Dexcom one Instruction Manual

Overview
Setup
START HERE
Instructions For Use

1
Contents
Dexcom ONE basics...................2
What do I need?
How does it work?
Set up smartphone ...................5
Set up the Dexcom ONE app
Set up receiver ......................9
Set up the Dexcom ONE optional receiver
Insert sensor .......................10
Decide where to insert your sensor
Insert sensor
Attach transmitter
Before you begin
1. Read Dexcom ONE basics.
2. Then, go to:
• Set up smartphone, if using your phone.
• Set up receiver, if using the optional
receiver.

2
Dexcom ONE
basics
What do I need?
1. A display device to get your glucose information
• Use your smartphone, the optional Dexcom
receiver, or both. (Smartphone not included.
Optional receiver available separately.)
Your smartphone Dexcom receiver
For a current list of compatible smart devices, go to
dexcom.com/compatibility
Optional receiver may not be available in all regions.
2. Sensor applicator with built-in sensor
• Inserts a sensor under your skin that gets your
glucose readings.
• Applies a plastic holder on top of your skin.
3. Reusable transmitter
• After applying the sensor to your skin, you will
snap a gray transmitter into the plastic holder.
• Transmitter sends glucose readings from your
sensor to your smartphone or receiver.
Applicator
Sensor
(already inside
the applicator) Plastic holder
Plastic holder

3
How does it work?
After you set up your Dexcom ONE, the transmitter
sends sensor readings to your display device.
All graphics are representational.
Your product may look different.
Critical safety notices!
Dexcom ONE alerts
No glucose alerts unless you turn them on.
• Turn on alerts during setup to get glucose and
system alerts when sensor warmup is over.
Dexcom ONE alerts will NOT override your
smartphone settings.
• You will NOT hear high or low glucose alerts if
your phone is set to silent (sound is turned off).
• You will hear alerts ONLY when your smartphone
sound is turned on.
• Check your smartphone settings or you may miss
an alert.
Dexcom ONE alerts will NOT override your
receiver settings.
• If your receiver is set to vibrate, you will not hear
high or low glucose alerts.
• Turn on receiver sound to hear alerts.
Use your system safely
Read all product instructions before using Dexcom
ONE, including the Safety Statements in your
Dexcom ONE User Guide.

4
Get started
Which display device are you using?
Smartphone
Go to Set up smartphone, p. 5.
Receiver
Go to Set up receiver, p. 8.

5
Set up
smartphone
Smartphone setup only. Go to p. 8 for the receiver.
Step 1: Set up the Dexcom
ONE app
Set up your app before inserting your sensor.
1. Go to the app store.
2. Search for Dexcom ONE.
3. Download and open the Dexcom ONE app.
4. With the app open, follow onscreen instructions,
including instruction to turn on alerts.
5. Internet access required during entire setup.
No glucose alerts unless you turn them on.
Turn on alerts when prompted to get glucose and
system alerts after sensor warmup is complete.
During setup, the app will prompt you to:
• Enter the transmitter serial number (SN),
either manually or by taking a picture.
SN is on the back of the transmitter and box.
• Enter the sensor code from the sensor you
insert, either manually or by taking a picture.
Sensor code is on the applicator.

6
Step 2: Sensor warmup
After setup, your sensor needs time to adjust to
your body. This takes about 2 hours. Keep your
smartphone within 6 meters of the transmitter.
You will NOT get sensor readings or alerts until
sensor warmup is complete.
If you did not turn on alerts during setup, turn
on alerts now to get alerts when sensor warmup is
complete.
Wait 2 Hours
When sensor warmup is complete, you will get
sensor readings.
Step 3: Check phone settings
Dexcom ONE alerts will NOT override your
smartphone settings.
• You will NOT hear high or low glucose alerts if
your phone is set to silent (sound is turned off).
• You will hear alerts ONLY when your smartphone
sound is turned on.
• Check your smartphone settings or you may miss
an alert.
Step 4: Turn on alerts
If you did not turn on alerts during set up, you can do
so at any time.
1. Tap Settings > Alerts.
2. Tap the alert you want to set.
3. Follow onscreen instructions.
4. Return to Settings > Alerts to set another one.
5. Tap the Glucose icon at the bottom of the
screen to return to the home screen.

7
Smartphone safety notice
Your smartphone is NOT a dedicated medical device.
To make sure you get sensor readings and alerts:
• Do NOT use a hacked (jailbroken or rooted)
smartphone because Dexcom ONE may not work
correctly.
• Bluetooth®must be on for your transmitter and
app to communicate.
• Do NOT rely on Dexcom ONE until you
understand how to use it and your smartphone’s
Bluetooth.
• Make sure your smartphone’s speaker(s) and
screen work.
• When using Bluetooth or plug-in headphones,
speakers, etc., test your system to find out where
your alerts sound. They might sound on your
smartphone, on the headphones or speakers,
etc., or on both.
• The app uses your smartphone battery. Keep
your phone charged to get readings and alerts.
• If your smartphone or the Dexcom ONE app
closes or is not working, you will NOT get
readings or alerts. Occasionally check that the
app is open and Bluetooth is on.
Read the Dexcom ONE
User Guide
Learn how to:
• Use your system safely
• Read your home screen
• Set and use alerts
• Make treatment decisions
• End a sensor session
• Start a new sensor session
• Reuse your transmitter
• Troubleshoot issues

8
Step 5: Set up Dexcom ONE
receiver (optional)
1. Press the Select button for 3-5 seconds.
2. Follow onscreen instructions, including
instructions to turn on alerts.
Optional receiver may not be available in all regions.
Select button

9
Set up receiver
Step 1: Set up the optional
Dexcom ONE receiver
1. Press the Select button for 3-5 seconds to turn
on receiver.
2. Use buttons to navigate. The screen will tell you
which button to use.
3. Follow onscreen instructions to set up receiver,
including instructions to turn on alerts.
No glucose alerts unless you turn them on.
Turn on alerts when prompted to get glucose and
system alerts after sensor warmup is complete.
Select button
Save
Back
Scroll up
Go back
Scroll down
Select
During setup, the receiver will prompt you to:
Enter the transmitter serial number (SN).
Find the SN on the transmitter
or the transmitter box.
Enter the sensor code from the
sensor you are inserting. Do not
use the code from a different
sensor.
Sensor code is on the applicator.

10
4. When you see this screen, set your receiver
aside. Use the instructions in this guide to insert
your sensor and attach your transmitter.
Step 2: Insert sensor
A. Decide where to insert your
sensor
Ages 2-17 years only
can use upper buttocks.




All people ages 2 and older
can use the abdomen or back
of upper arm.




Avoid:
• Bony areas
• Irritated skin
• Tattoos
• Areas that get bumped
Insert Sensor and
Attach Transmitter
10:30 50%
Confirm that you inserted
your sensor and attached
your transmitter before
pairing.
See insertion instructions in
product information.
Sensor inserted and
transmitter attached
Back

11
B. Insert sensor
1
Wash hands and sensor
site with soap. Dry.
Scrub sensor site with
alcohol wipe.
2
XXXX
XXXX
Peel off both adhesive
backings from applicator.
Do not touch adhesive.
Keep the backings. They
show your sensor code. Do
not place anything on the
adhesive. The adhesive
goes on your skin.
3
Place applicator on skin
before breaking safety
guard.
4
Fold and break off the
orange safety guard. Do
not twist.
5Press orange button to
insert sensor.
6
Remove applicator from
skin leaving patch and
holder on.
7
Throw away applicator.
Follow local guidelines
for disposal of blood-
contacting components.

12
Step 3: Attach transmitter
1Clean transmitter with
alcohol wipe.
2Insert transmitter, tab first,
into holder.
3
Snap transmitter into
place. You will hear a click.
Make sure it is flat and
snug in holder.
4Rub around patch 3 times
to help it stick.
Step 4: Pair transmitter
1. AFTER you insert the sensor and attach the
transmitter, press the Select button to begin
pairing your transmitter and your receiver.
2. Wait while your transmitter pairs with your
receiver. This can take up to 30 minutes.
3. Keep your receiver within 6 meters of your
transmitter.
Insert Sensor and
Attach Transmitter
10:30 50%
Confirm that your sensor is
inserted before pairing.
See insertion instructions in
product information.
Sensor is Inserted
Back
Select
button

13
Step 5: Sensor warmup
After setup, your sensor needs time to adjust to your
body. This takes about 2 hours. Keep your receiver
within 6 meters of the transmitter.
You will NOT get sensor readings or alerts until
sensor warmup is complete.
If you did not turn on alerts during setup, turn
on alerts now to get alerts when sensor warmup is
complete.
Wait 2 hours
When sensor warmup is complete, you will get
sensor readings.
Step 6: Check receiver
settings
Dexcom ONE alerts will not override your
receiver settings.
• If your receiver is set to vibrate, you will not hear
high or low glucose alerts.
• To check your receiver sound settings: Go to
Menu > Settings > Alert Sounds.
• Turn on receiver sound to hear alerts.
Step 7: Turn on alerts
No glucose alerts unless you turn them on.
If you did not turn on alerts during set up, you can do
so at any time. In your receiver:
1. Go to Menu > Settings > Alerts.
2. Select the alert you want to set.
3. Follow the onscreen instructions.
4. Return to Menu > Settings > Alerts to set
another one.

14
Step 8: Set up the Dexcom
ONE app (optional)
1. Go to the app store on your smartphone.
2. Search for Dexcom ONE.
3. Download and open the Dexcom ONE app.
4. Follow the onscreen instructions, including
instructions to turn on alerts.
Read the Dexcom ONE User
Guide
Learn how to:
• Use your system safely
• Read your home screen
• Set and use alerts
• Make treatment decisions
• Start a new sensor session
• Reuse your transmitter
• Troubleshoot issues

© 2021 Dexcom, Inc. All rights reserved.
Covered by patents dexcom.com/patents.
Dexcom, Dexcom ONE, and Dexcom Care are
registered trademarks of Dexcom, Inc. in the
United States and/or other countries. Bluetooth is
a registered trademark owned by Bluetooth SIG.
Apple is a trademark of by Apple Inc., registered in
the U.S. and other countries. Android is a registered
trademark owned by Alphabet Inc. All other marks
are property of their respective owners.

MDSS GmbH
Schigraben 41
30175 Hannover, Germany
AW00018-05 Rev 003 MT00018-05
Rev Date: 2021/11
Dexcom, Inc.
6340 Sequence Drive
San Diego, CA 92121 USA
+1.858.200.0200
dexcom.com
Outside US: Contact your local
Dexcom representative
EC REP