Yolink YS7704-UC User manual

LED & Beep Behaviors
Blinking Red Once, then Green Once
Device turned on
Blinking Red And Green Alternately
Restoring to Factory Defaults
Blinking Green
Connecting to Cloud
Slow Blinking Green
Updating
Fast Blinking Green
Control-D2D Pairing in Progress
Blinking Red Once
Device alerts or device is connected
to the cloud and is functioning
normally
Fast Blinking Red
Control-D2D Unpairing in Progress
Fast Blinking Red Every 30 Seconds
Batteries are low; please replace the
batteries
Before You Begin
B
Installation & User
Guide
Product Support
Support produit
Soporte de producto
Your Door Sensor connects to the internet via
a YoLink hub (SpeakerHub or the original
YoLink Hub), and it does not connect directly
to your WiFi or local network. In order for
remote access to the device from the app, and
for full functionality, a hub is required. This
guide assumes the YoLink app has been
installed on your smartphone, and a YoLink
hub is installed and online (or your location,
apartment, condo, etcetera, is already served
by a YoLink wireless network).
You can also find all guides and additional
resources, such as videos and troubleshooting
instructions, on the Door Sensor Product
Support page by scanning the QR code below
or by visiting:
https://shop.yosmart.com/pages/
door-sensor-product-support
Please note: this is a quick start guide,
intended to get you started on the installation
of your Door Sensor. Download the full
Installation & User Guide by scanning this QR
code:
Power Up
E
Install the App
F
Open the app and tap Sign up for an account.
You will be required to provide a username and
a password. Follow the
instructions, to set up a new account. Allow
notifications, when prompted.
You will immediately receive a welcome email
from [e-mail] with some
helpful information. Please mark the
yosmart.com domain as safe, to ensure you
receive important messages in the future.
Log in to the app using your new username
and password.
The app opens to the Favorite screen. This is
where your favorite devices and scenes will be
shown. You can organize your devices by
room, in the Rooms screen, later.
Refer to the full user guide and online support
for instructions on the use of the YoLink app.
If you are new to YoLink, please install the app
on your phone or tablet, if you have not
already. Otherwise, please proceed to the next
section.
Scan the appropriate QR code below or find
the “YoLink app” on the appropriate app store.
Apple phone/tablet
iOS 9.0 or higher
Android phone/
tablet 4.4 or higher
Press the SET button
briefly
Observe the LED blinks
red then green
In the Box
C
Double-sided Tape
Housing Screw
Double-sided Tape
Back Shell
Includes two AAA
non-rechargeable
batteries
Get to Know Your
Door Sensor
D
Door Sensor
Status LED
SET Button
Semi-circle
- Used for properly
aligning the magnet to
the sensor during
installation
Magnet
Door Sensor
Quick Start Guide
AAA Batteries (2)
Installed
YS7704-UC, YS7704-EC
Door Sensor
Quick Start Guide
Revision Apr. 27, 2023
Welcome!
A
Thank you for purchasing YoLink products! We
appreciate you trusting YoLink for your smart
home & automation needs. Your 100%
satisfaction is our goal. If you experience any
problems with your installation, with our
products or if you have any questions that this
manual does not answer, please contact us
right away. See the Contact Us section for
more info.
Thank you!
Eric Vanzo
Customer Experience Manager
Pour des instructions en
français, scannez les codes
QR dans la section suivante.
Para obtener instrucciones en
español, escanee los códigos
QR en la siguiente sección.
Fr
Es
The following icons are used in this guide to
convey specific types of information:
Very important information
(can save you time!)

LED & Beep Behaviors
Blinking Red Once, then Green Once
Device turned on
Blinking Red And Green Alternately
Restoring to Factory Defaults
Blinking Green
Connecting to Cloud
Slow Blinking Green
Updating
Fast Blinking Green
Control-D2D Pairing in Progress
Blinking Red Once
Device alerts or device is connected
to the cloud and is functioning
normally
Fast Blinking Red
Control-D2D Unpairing in Progress
Fast Blinking Red Every 30 Seconds
Batteries are low; please replace the
batteries
Before You Begin
B
Installation & User
Guide
Product Support
Support produit
Soporte de producto
Your Door Sensor connects to the internet via
a YoLink hub (SpeakerHub or the original
YoLink Hub), and it does not connect directly
to your WiFi or local network. In order for
remote access to the device from the app, and
for full functionality, a hub is required. This
guide assumes the YoLink app has been
installed on your smartphone, and a YoLink
hub is installed and online (or your location,
apartment, condo, etcetera, is already served
by a YoLink wireless network).
You can also find all guides and additional
resources, such as videos and troubleshooting
instructions, on the Door Sensor Product
Support page by scanning the QR code below
or by visiting:
https://shop.yosmart.com/pages/
door-sensor-product-support
Please note: this is a quick start guide,
intended to get you started on the installation
of your Door Sensor. Download the full
Installation & User Guide by scanning this QR
code:
Power Up
E
Install the App
F
Open the app and tap Sign up for an account.
You will be required to provide a username and
a password. Follow the
instructions, to set up a new account. Allow
notifications, when prompted.
You will immediately receive a welcome email
from [e-mail] with some
helpful information. Please mark the
yosmart.com domain as safe, to ensure you
receive important messages in the future.
Log in to the app using your new username
and password.
The app opens to the Favorite screen. This is
where your favorite devices and scenes will be
shown. You can organize your devices by
room, in the Rooms screen, later.
Refer to the full user guide and online support
for instructions on the use of the YoLink app.
If you are new to YoLink, please install the app
on your phone or tablet, if you have not
already. Otherwise, please proceed to the next
section.
Scan the appropriate QR code below or find
the “YoLink app” on the appropriate app store.
Apple phone/tablet
iOS 9.0 or higher
Android phone/
tablet 4.4 or higher
Press the SET button
briefly
Observe the LED blinks
red then green
In the Box
C
Double-sided Tape
Housing Screw
Double-sided Tape
Back Shell
Includes two AAA
non-rechargeable
batteries
Get to Know Your
Door Sensor
D
Door Sensor
Status LED
SET Button
Semi-circle
- Used for properly
aligning the magnet to
the sensor during
installation
Magnet
Door Sensor
Quick Start Guide
AAA Batteries (2)
Installed
YS7704-UC, YS7704-EC
Door Sensor
Quick Start Guide
Revision Apr. 27, 2023
Welcome!
A
Thank you for purchasing YoLink products! We
appreciate you trusting YoLink for your smart
home & automation needs. Your 100%
satisfaction is our goal. If you experience any
problems with your installation, with our
products or if you have any questions that this
manual does not answer, please contact us
right away. See the Contact Us section for
more info.
Thank you!
Eric Vanzo
Customer Experience Manager
Pour des instructions en
français, scannez les codes
QR dans la section suivante.
Para obtener instrucciones en
español, escanee los códigos
QR en la siguiente sección.
Fr
Es
The following icons are used in this guide to
convey specific types of information:
Very important information
(can save you time!)

LED & Beep Behaviors
Blinking Red Once, then Green Once
Device turned on
Blinking Red And Green Alternately
Restoring to Factory Defaults
Blinking Green
Connecting to Cloud
Slow Blinking Green
Updating
Fast Blinking Green
Control-D2D Pairing in Progress
Blinking Red Once
Device alerts or device is connected
to the cloud and is functioning
normally
Fast Blinking Red
Control-D2D Unpairing in Progress
Fast Blinking Red Every 30 Seconds
Batteries are low; please replace the
batteries
Before You Begin
B
Installation & User
Guide
Product Support
Support produit
Soporte de producto
Your Door Sensor connects to the internet via
a YoLink hub (SpeakerHub or the original
YoLink Hub), and it does not connect directly
to your WiFi or local network. In order for
remote access to the device from the app, and
for full functionality, a hub is required. This
guide assumes the YoLink app has been
installed on your smartphone, and a YoLink
hub is installed and online (or your location,
apartment, condo, etcetera, is already served
by a YoLink wireless network).
You can also find all guides and additional
resources, such as videos and troubleshooting
instructions, on the Door Sensor Product
Support page by scanning the QR code below
or by visiting:
https://shop.yosmart.com/pages/
door-sensor-product-support
Please note: this is a quick start guide,
intended to get you started on the installation
of your Door Sensor. Download the full
Installation & User Guide by scanning this QR
code:
Power Up
E
Install the App
F
Open the app and tap Sign up for an account.
You will be required to provide a username and
a password. Follow the
instructions, to set up a new account. Allow
notifications, when prompted.
You will immediately receive a welcome email
from [e-mail] with some
helpful information. Please mark the
yosmart.com domain as safe, to ensure you
receive important messages in the future.
Log in to the app using your new username
and password.
The app opens to the Favorite screen. This is
where your favorite devices and scenes will be
shown. You can organize your devices by
room, in the Rooms screen, later.
Refer to the full user guide and online support
for instructions on the use of the YoLink app.
If you are new to YoLink, please install the app
on your phone or tablet, if you have not
already. Otherwise, please proceed to the next
section.
Scan the appropriate QR code below or find
the “YoLink app” on the appropriate app store.
Apple phone/tablet
iOS 9.0 or higher
Android phone/
tablet 4.4 or higher
Press the SET button
briefly
Observe the LED blinks
red then green
In the Box
C
Double-sided Tape
Housing Screw
Double-sided Tape
Back Shell
Includes two AAA
non-rechargeable
batteries
Get to Know Your
Door Sensor
D
Door Sensor
Status LED
SET Button
Semi-circle
- Used for properly
aligning the magnet to
the sensor during
installation
Magnet
Door Sensor
Quick Start Guide
AAA Batteries (2)
Installed
YS7704-UC, YS7704-EC
Door Sensor
Quick Start Guide
Revision Apr. 27, 2023
Welcome!
A
Thank you for purchasing YoLink products! We
appreciate you trusting YoLink for your smart
home & automation needs. Your 100%
satisfaction is our goal. If you experience any
problems with your installation, with our
products or if you have any questions that this
manual does not answer, please contact us
right away. See the Contact Us section for
more info.
Thank you!
Eric Vanzo
Customer Experience Manager
Pour des instructions en
français, scannez les codes
QR dans la section suivante.
Para obtener instrucciones en
español, escanee los códigos
QR en la siguiente sección.
Fr
Es
The following icons are used in this guide to
convey specific types of information:
Very important information
(can save you time!)

LED & Beep Behaviors
Blinking Red Once, then Green Once
Device turned on
Blinking Red And Green Alternately
Restoring to Factory Defaults
Blinking Green
Connecting to Cloud
Slow Blinking Green
Updating
Fast Blinking Green
Control-D2D Pairing in Progress
Blinking Red Once
Device alerts or device is connected
to the cloud and is functioning
normally
Fast Blinking Red
Control-D2D Unpairing in Progress
Fast Blinking Red Every 30 Seconds
Batteries are low; please replace the
batteries
Before You Begin
B
Installation & User
Guide
Product Support
Support produit
Soporte de producto
Your Door Sensor connects to the internet via
a YoLink hub (SpeakerHub or the original
YoLink Hub), and it does not connect directly
to your WiFi or local network. In order for
remote access to the device from the app, and
for full functionality, a hub is required. This
guide assumes the YoLink app has been
installed on your smartphone, and a YoLink
hub is installed and online (or your location,
apartment, condo, etcetera, is already served
by a YoLink wireless network).
You can also find all guides and additional
resources, such as videos and troubleshooting
instructions, on the Door Sensor Product
Support page by scanning the QR code below
or by visiting:
https://shop.yosmart.com/pages/
door-sensor-product-support
Please note: this is a quick start guide,
intended to get you started on the installation
of your Door Sensor. Download the full
Installation & User Guide by scanning this QR
code:
Power Up
E
Install the App
F
Open the app and tap Sign up for an account.
You will be required to provide a username and
a password. Follow the
instructions, to set up a new account. Allow
notifications, when prompted.
You will immediately receive a welcome email
from [email protected] with some
helpful information. Please mark the
yosmart.com domain as safe, to ensure you
receive important messages in the future.
Log in to the app using your new username
and password.
The app opens to the Favorite screen. This is
where your favorite devices and scenes will be
shown. You can organize your devices by
room, in the Rooms screen, later.
Refer to the full user guide and online support
for instructions on the use of the YoLink app.
If you are new to YoLink, please install the app
on your phone or tablet, if you have not
already. Otherwise, please proceed to the next
section.
Scan the appropriate QR code below or find
the “YoLink app” on the appropriate app store.
Apple phone/tablet
iOS 9.0 or higher
Android phone/
tablet 4.4 or higher
Press the SET button
briefly
Observe the LED blinks
red then green
In the Box
C
Double-sided Tape
Housing Screw
Double-sided Tape
Back Shell
Includes two AAA
non-rechargeable
batteries
Get to Know Your
Door Sensor
D
Door Sensor
Status LED
SET Button
Semi-circle
- Used for properly
aligning the magnet to
the sensor during
installation
Magnet
Door Sensor
Quick Start Guide
AAA Batteries (2)
Installed
YS7704-UC, YS7704-EC
Door Sensor
Quick Start Guide
Revision Apr. 27, 2023
Welcome!
A
Thank you for purchasing YoLink products! We
appreciate you trusting YoLink for your smart
home & automation needs. Your 100%
satisfaction is our goal. If you experience any
problems with your installation, with our
products or if you have any questions that this
manual does not answer, please contact us
right away. See the Contact Us section for
more info.
Thank you!
Eric Vanzo
Customer Experience Manager
Pour des instructions en
français, scannez les codes
QR dans la section suivante.
Para obtener instrucciones en
español, escanee los códigos
QR en la siguiente sección.
Fr
Es
The following icons are used in this guide to
convey specific types of information:
Very important information
(can save you time!)

Refer to Figure A. The sensor and magnet each
have a semi-circle engraved into the housing.
The optimal placement of magnet and sensor
will result in the two semi-circles placed next
to each other to form a circle. But the magnet
can be placed on a higher, or lower, plane (or
level), than the sensor, as shown in Figure B.
Also, the magnet can be turned at an angle
from the sensor, as shown in Figure C (90
degrees, as shown here, or less than 90
degrees, for angled or sloped molding). When
determining the appropriate location,
placement and orientation of the Door Sensor
parts, you can view the status of the door
sensor in the YoLink app, as well as use the
sensor’s LED indicator (which illuminates
briefly when the door is opened) to check your
installation.
Before installing the Door Sensor, consider the
following:
The magnet can be on the door, or the
sensor can be on the door.
The sensor and magnet can be installed
upside-down or sideways; this will not
effect the operation.
The Door Sensor should always be
installed on the indoor and “secure” side
of the door (that is on the locked or
private side of the door, which should not
be subjected to tampering or disabling by
an intruder, etc.).
Avoid locations where the door sensor
will be subjected to physical damage,
such as on the bottom of the door (where
it might be kicked) or near the handle
(where is might be struck by a hand or
object).
With windows and sliding glass or French
doors, consider the sliding door or leaf
that is fixed, and the one that is
moveable, and make sure your sensor is
not being installed where it will not allow
the door or window to slide fully open.
Do not place the door sensor too close to
the magnet. As materials can shrink or
expand with temperature changes, the
distance between the two pieces might
change later, too, resulting in the two
parts colliding.
Use care to not place your sensor and
magnet too far apart. If you have placed
the sensor and magnet at their absolute
farthest distance from each other,
expansion or contraction of the door and
frame due to temperature or humidity
changes could result in your Door Sensor
indicating the door/window is open when
it is not. Also, doors or windows with too
much play (movement while in the closed
position), can contribute to false-open
indications.
Generally avoid placing the sensor on the
hinge side of a door. While the sensor can
be made to work at these locations, the
door itself might be able to be opened
significantly before the sensor indicates
the door is open.
Refer to the full installation and user guide to
complete the setup of your Door Sensor.
2. Approve access to your phone’s camera, if
requested. A viewfinder will be shown on the
app.
3. Hold the phone over the QR code so that the
code appears in the viewfinder. If successful,
the Add Device screen will be displayed.
4. You can change the device name and assign
it to a room later. Tap Bind device.
5. Refer to the full user guide and/or online
resources for additional instructions on using
the YoLink app.
Contact Us
I
Installation
H
Installation, Continued
H
Add the Door Sensor to
the App
G
1. Tap Add Device (if shown) or tap the
scanner icon:
Scanner icon
Door sensor basics
Before installing your new Door Sensor, it is
best if you understand how it works. The Door
Sensor is made up of two parts. The smaller
part is referred to as the magnet, while the
larger part is typically referred to as the sensor
or door sensor. The larger part contains the
batteries and the electronics, as well as a reed
switch. When the magnet is near the sensor,
its magnetic force causes the reed switch to
close and signal the sensor that the door is
closed.
The door sensor has a maximum distance
between it and the magnet, while it will
indicate the door is closed. This is often
referred to as the “gap”. The Door Sensor has a
maximum gap of around ¾” or around 19
millimeters. The door material, such as steel
versus wood, can adversely impact this
distance.
Please note, the Door Sensor is intended for
indoor use. Consider our Outdoor Contact
Sensor for outdoor locations, such as swing
gates. For garage doors, consider our Garage
Door Sensor. For special applications, our
Outdoor Contact Sensor can be used in
conjunction with specialized contacts, such as
chain link fence gate contacts.
Sensor location considerations
The Door Sensor can be used on many types
of standard “man” doors, both swing and
sliding type, sliding glass doors, windows, lids,
hatches, cabinet and pantry doors, and even in
or on drawers and boxes.
Refer to the full user guide for additional
diagrams and additional tips on sensor
placement for popular door and window types.
Figure A
Figure B Figure C
DOOR SWING
(IN/OUT)
(VIEWED FROM ABOVE/BELOW)
SENSOR
MAGNET
DOOR DOOR FRAME
DOOR SWING
(OUT)
(VIEWED FROM ABOVE/BELOW)
SENSOR
MAGNET
DOOR DOOR FRAME
We are here for you, if you ever need any
assistance installing, setting up or using a
YoLink app or product!
Need help? For fastest service, please email us
24/7 at [e-mail]
Or call us at 831-292-4831 (US phone support
hours: Monday - Friday, 9AM to 5PM Pacific)
You can also find additional support and ways
to contact us at:
www.yosmart.com/support-and-service
Or scan the QR code:
Finally, if you have any feedback or sugges-
tions for us, please email us at
[e-mail]
Thank you for trusting YoLink!
Eric Vanzo
Customer Experience Manager
Support
Home Page
15375 Barranca Parkway
Ste. J-107 | Irvine, California 92618
© 2023 YOSMART, INC IRVINE, CALIFORNIA

Refer to Figure A. The sensor and magnet each
have a semi-circle engraved into the housing.
The optimal placement of magnet and sensor
will result in the two semi-circles placed next
to each other to form a circle. But the magnet
can be placed on a higher, or lower, plane (or
level), than the sensor, as shown in Figure B.
Also, the magnet can be turned at an angle
from the sensor, as shown in Figure C (90
degrees, as shown here, or less than 90
degrees, for angled or sloped molding). When
determining the appropriate location,
placement and orientation of the Door Sensor
parts, you can view the status of the door
sensor in the YoLink app, as well as use the
sensor’s LED indicator (which illuminates
briefly when the door is opened) to check your
installation.
Before installing the Door Sensor, consider the
following:
The magnet can be on the door, or the
sensor can be on the door.
The sensor and magnet can be installed
upside-down or sideways; this will not
effect the operation.
The Door Sensor should always be
installed on the indoor and “secure” side
of the door (that is on the locked or
private side of the door, which should not
be subjected to tampering or disabling by
an intruder, etc.).
Avoid locations where the door sensor
will be subjected to physical damage,
such as on the bottom of the door (where
it might be kicked) or near the handle
(where is might be struck by a hand or
object).
With windows and sliding glass or French
doors, consider the sliding door or leaf
that is fixed, and the one that is
moveable, and make sure your sensor is
not being installed where it will not allow
the door or window to slide fully open.
Do not place the door sensor too close to
the magnet. As materials can shrink or
expand with temperature changes, the
distance between the two pieces might
change later, too, resulting in the two
parts colliding.
Use care to not place your sensor and
magnet too far apart. If you have placed
the sensor and magnet at their absolute
farthest distance from each other,
expansion or contraction of the door and
frame due to temperature or humidity
changes could result in your Door Sensor
indicating the door/window is open when
it is not. Also, doors or windows with too
much play (movement while in the closed
position), can contribute to false-open
indications.
Generally avoid placing the sensor on the
hinge side of a door. While the sensor can
be made to work at these locations, the
door itself might be able to be opened
significantly before the sensor indicates
the door is open.
Refer to the full installation and user guide to
complete the setup of your Door Sensor.
2. Approve access to your phone’s camera, if
requested. A viewfinder will be shown on the
app.
3. Hold the phone over the QR code so that the
code appears in the viewfinder. If successful,
the Add Device screen will be displayed.
4. You can change the device name and assign
it to a room later. Tap Bind device.
5. Refer to the full user guide and/or online
resources for additional instructions on using
the YoLink app.
Contact Us
I
Installation
H
Installation, Continued
H
Add the Door Sensor to
the App
G
1. Tap Add Device (if shown) or tap the
scanner icon:
Scanner icon
Door sensor basics
Before installing your new Door Sensor, it is
best if you understand how it works. The Door
Sensor is made up of two parts. The smaller
part is referred to as the magnet, while the
larger part is typically referred to as the sensor
or door sensor. The larger part contains the
batteries and the electronics, as well as a reed
switch. When the magnet is near the sensor,
its magnetic force causes the reed switch to
close and signal the sensor that the door is
closed.
The door sensor has a maximum distance
between it and the magnet, while it will
indicate the door is closed. This is often
referred to as the “gap”. The Door Sensor has a
maximum gap of around ¾” or around 19
millimeters. The door material, such as steel
versus wood, can adversely impact this
distance.
Please note, the Door Sensor is intended for
indoor use. Consider our Outdoor Contact
Sensor for outdoor locations, such as swing
gates. For garage doors, consider our Garage
Door Sensor. For special applications, our
Outdoor Contact Sensor can be used in
conjunction with specialized contacts, such as
chain link fence gate contacts.
Sensor location considerations
The Door Sensor can be used on many types
of standard “man” doors, both swing and
sliding type, sliding glass doors, windows, lids,
hatches, cabinet and pantry doors, and even in
or on drawers and boxes.
Refer to the full user guide for additional
diagrams and additional tips on sensor
placement for popular door and window types.
Figure A
Figure B Figure C
DOOR SWING
(IN/OUT)
(VIEWED FROM ABOVE/BELOW)
SENSOR
MAGNET
DOOR DOOR FRAME
DOOR SWING
(OUT)
(VIEWED FROM ABOVE/BELOW)
SENSOR
MAGNET
DOOR DOOR FRAME
We are here for you, if you ever need any
assistance installing, setting up or using a
YoLink app or product!
Need help? For fastest service, please email us
24/7 at [e-mail]
Or call us at 831-292-4831 (US phone support
hours: Monday - Friday, 9AM to 5PM Pacific)
You can also find additional support and ways
to contact us at:
www.yosmart.com/support-and-service
Or scan the QR code:
Finally, if you have any feedback or sugges-
tions for us, please email us at
[e-mail]
Thank you for trusting YoLink!
Eric Vanzo
Customer Experience Manager
Support
Home Page
15375 Barranca Parkway
Ste. J-107 | Irvine, California 92618
© 2023 YOSMART, INC IRVINE, CALIFORNIA

Refer to Figure A. The sensor and magnet each
have a semi-circle engraved into the housing.
The optimal placement of magnet and sensor
will result in the two semi-circles placed next
to each other to form a circle. But the magnet
can be placed on a higher, or lower, plane (or
level), than the sensor, as shown in Figure B.
Also, the magnet can be turned at an angle
from the sensor, as shown in Figure C (90
degrees, as shown here, or less than 90
degrees, for angled or sloped molding). When
determining the appropriate location,
placement and orientation of the Door Sensor
parts, you can view the status of the door
sensor in the YoLink app, as well as use the
sensor’s LED indicator (which illuminates
briefly when the door is opened) to check your
installation.
Before installing the Door Sensor, consider the
following:
The magnet can be on the door, or the
sensor can be on the door.
The sensor and magnet can be installed
upside-down or sideways; this will not
effect the operation.
The Door Sensor should always be
installed on the indoor and “secure” side
of the door (that is on the locked or
private side of the door, which should not
be subjected to tampering or disabling by
an intruder, etc.).
Avoid locations where the door sensor
will be subjected to physical damage,
such as on the bottom of the door (where
it might be kicked) or near the handle
(where is might be struck by a hand or
object).
With windows and sliding glass or French
doors, consider the sliding door or leaf
that is fixed, and the one that is
moveable, and make sure your sensor is
not being installed where it will not allow
the door or window to slide fully open.
Do not place the door sensor too close to
the magnet. As materials can shrink or
expand with temperature changes, the
distance between the two pieces might
change later, too, resulting in the two
parts colliding.
Use care to not place your sensor and
magnet too far apart. If you have placed
the sensor and magnet at their absolute
farthest distance from each other,
expansion or contraction of the door and
frame due to temperature or humidity
changes could result in your Door Sensor
indicating the door/window is open when
it is not. Also, doors or windows with too
much play (movement while in the closed
position), can contribute to false-open
indications.
Generally avoid placing the sensor on the
hinge side of a door. While the sensor can
be made to work at these locations, the
door itself might be able to be opened
significantly before the sensor indicates
the door is open.
Refer to the full installation and user guide to
complete the setup of your Door Sensor.
2. Approve access to your phone’s camera, if
requested. A viewfinder will be shown on the
app.
3. Hold the phone over the QR code so that the
code appears in the viewfinder. If successful,
the Add Device screen will be displayed.
4. You can change the device name and assign
it to a room later. Tap Bind device.
5. Refer to the full user guide and/or online
resources for additional instructions on using
the YoLink app.
Contact Us
I
Installation
H
Installation, Continued
H
Add the Door Sensor to
the App
G
1. Tap Add Device (if shown) or tap the
scanner icon:
Scanner icon
Door sensor basics
Before installing your new Door Sensor, it is
best if you understand how it works. The Door
Sensor is made up of two parts. The smaller
part is referred to as the magnet, while the
larger part is typically referred to as the sensor
or door sensor. The larger part contains the
batteries and the electronics, as well as a reed
switch. When the magnet is near the sensor,
its magnetic force causes the reed switch to
close and signal the sensor that the door is
closed.
The door sensor has a maximum distance
between it and the magnet, while it will
indicate the door is closed. This is often
referred to as the “gap”. The Door Sensor has a
maximum gap of around ¾” or around 19
millimeters. The door material, such as steel
versus wood, can adversely impact this
distance.
Please note, the Door Sensor is intended for
indoor use. Consider our Outdoor Contact
Sensor for outdoor locations, such as swing
gates. For garage doors, consider our Garage
Door Sensor. For special applications, our
Outdoor Contact Sensor can be used in
conjunction with specialized contacts, such as
chain link fence gate contacts.
Sensor location considerations
The Door Sensor can be used on many types
of standard “man” doors, both swing and
sliding type, sliding glass doors, windows, lids,
hatches, cabinet and pantry doors, and even in
or on drawers and boxes.
Refer to the full user guide for additional
diagrams and additional tips on sensor
placement for popular door and window types.
Figure A
Figure B Figure C
DOOR SWING
(IN/OUT)
(VIEWED FROM ABOVE/BELOW)
SENSOR
MAGNET
DOOR DOOR FRAME
DOOR SWING
(OUT)
(VIEWED FROM ABOVE/BELOW)
SENSOR
MAGNET
DOOR DOOR FRAME
We are here for you, if you ever need any
assistance installing, setting up or using a
YoLink app or product!
Need help? For fastest service, please email us
24/7 at [e-mail]
Or call us at 831-292-4831 (US phone support
hours: Monday - Friday, 9AM to 5PM Pacific)
You can also find additional support and ways
to contact us at:
www.yosmart.com/support-and-service
Or scan the QR code:
Finally, if you have any feedback or sugges-
tions for us, please email us at
[e-mail]
Thank you for trusting YoLink!
Eric Vanzo
Customer Experience Manager
Support
Home Page
15375 Barranca Parkway
Ste. J-107 | Irvine, California 92618
© 2023 YOSMART, INC IRVINE, CALIFORNIA

Refer to Figure A. The sensor and magnet each
have a semi-circle engraved into the housing.
The optimal placement of magnet and sensor
will result in the two semi-circles placed next
to each other to form a circle. But the magnet
can be placed on a higher, or lower, plane (or
level), than the sensor, as shown in Figure B.
Also, the magnet can be turned at an angle
from the sensor, as shown in Figure C (90
degrees, as shown here, or less than 90
degrees, for angled or sloped molding). When
determining the appropriate location,
placement and orientation of the Door Sensor
parts, you can view the status of the door
sensor in the YoLink app, as well as use the
sensor’s LED indicator (which illuminates
briefly when the door is opened) to check your
installation.
Before installing the Door Sensor, consider the
following:
The magnet can be on the door, or the
sensor can be on the door.
The sensor and magnet can be installed
upside-down or sideways; this will not
effect the operation.
The Door Sensor should always be
installed on the indoor and “secure” side
of the door (that is on the locked or
private side of the door, which should not
be subjected to tampering or disabling by
an intruder, etc.).
Avoid locations where the door sensor
will be subjected to physical damage,
such as on the bottom of the door (where
it might be kicked) or near the handle
(where is might be struck by a hand or
object).
With windows and sliding glass or French
doors, consider the sliding door or leaf
that is fixed, and the one that is
moveable, and make sure your sensor is
not being installed where it will not allow
the door or window to slide fully open.
Do not place the door sensor too close to
the magnet. As materials can shrink or
expand with temperature changes, the
distance between the two pieces might
change later, too, resulting in the two
parts colliding.
Use care to not place your sensor and
magnet too far apart. If you have placed
the sensor and magnet at their absolute
farthest distance from each other,
expansion or contraction of the door and
frame due to temperature or humidity
changes could result in your Door Sensor
indicating the door/window is open when
it is not. Also, doors or windows with too
much play (movement while in the closed
position), can contribute to false-open
indications.
Generally avoid placing the sensor on the
hinge side of a door. While the sensor can
be made to work at these locations, the
door itself might be able to be opened
significantly before the sensor indicates
the door is open.
Refer to the full installation and user guide to
complete the setup of your Door Sensor.
2. Approve access to your phone’s camera, if
requested. A viewfinder will be shown on the
app.
3. Hold the phone over the QR code so that the
code appears in the viewfinder. If successful,
the Add Device screen will be displayed.
4. You can change the device name and assign
it to a room later. Tap Bind device.
5. Refer to the full user guide and/or online
resources for additional instructions on using
the YoLink app.
Contact Us
I
Installation
H
Installation, Continued
H
Add the Door Sensor to
the App
G
1. Tap Add Device (if shown) or tap the
scanner icon:
Scanner icon
Door sensor basics
Before installing your new Door Sensor, it is
best if you understand how it works. The Door
Sensor is made up of two parts. The smaller
part is referred to as the magnet, while the
larger part is typically referred to as the sensor
or door sensor. The larger part contains the
batteries and the electronics, as well as a reed
switch. When the magnet is near the sensor,
its magnetic force causes the reed switch to
close and signal the sensor that the door is
closed.
The door sensor has a maximum distance
between it and the magnet, while it will
indicate the door is closed. This is often
referred to as the “gap”. The Door Sensor has a
maximum gap of around ¾” or around 19
millimeters. The door material, such as steel
versus wood, can adversely impact this
distance.
Please note, the Door Sensor is intended for
indoor use. Consider our Outdoor Contact
Sensor for outdoor locations, such as swing
gates. For garage doors, consider our Garage
Door Sensor. For special applications, our
Outdoor Contact Sensor can be used in
conjunction with specialized contacts, such as
chain link fence gate contacts.
Sensor location considerations
The Door Sensor can be used on many types
of standard “man” doors, both swing and
sliding type, sliding glass doors, windows, lids,
hatches, cabinet and pantry doors, and even in
or on drawers and boxes.
Refer to the full user guide for additional
diagrams and additional tips on sensor
placement for popular door and window types.
Figure A
Figure B Figure C
DOOR SWING
(IN/OUT)
(VIEWED FROM ABOVE/BELOW)
SENSOR
MAGNET
DOOR DOOR FRAME
DOOR SWING
(OUT)
(VIEWED FROM ABOVE/BELOW)
SENSOR
MAGNET
DOOR DOOR FRAME
We are here for you, if you ever need any
assistance installing, setting up or using a
YoLink app or product!
Need help? For fastest service, please email us
24/7 at [email protected]
Or call us at 831-292-4831 (US phone support
hours: Monday - Friday, 9AM to 5PM Pacific)
You can also find additional support and ways
to contact us at:
www.yosmart.com/support-and-service
Or scan the QR code:
Finally, if you have any feedback or sugges-
tions for us, please email us at
[email protected]
Thank you for trusting YoLink!
Eric Vanzo
Customer Experience Manager
Support
Home Page
15375 Barranca Parkway
Ste. J-107 | Irvine, California 92618
© 2023 YOSMART, INC IRVINE, CALIFORNIA