949-825-5958 (9am-5pm Western time Mon-Fri) service@YoSmart.com

Door Sensor

  • Question: Why this sensor not sending Alarm when door open or closed?


Really sorry YoLink Door Sensor itself does not alarm. It only sends push notifications.
It works with Alexa, so you can create routines to get voice announcements. You can visit https://youtu.be/cLFCb2TI2fY on Part 5 – Alexa Integration to know how to create routines on Alexa APP for your Door Sensor. We have released a YoLink Siren Alarm which works with YoLink Sensors and sends audio alarms. Its Link: https://www.amazon.com/dp/B0887SMPKK

What’s more, the reasons why the door sensor doesn’t have audio itself are firstly we make its battery life last more than 5 years; Second, if the door sensor is placed in the places far from the line of sight, the sound will not be heard all the time.

Therefore, we have made the YoLink Siren Alarm, which can support up to 128 YoLink Sensors. The Siren Alarm can be placed wherever you like. When the door is opened or closed, the Siren Alarm will emit loud sound so that you will never miss any unexpected intrusion.
At the same time, the Siren Alarm can also be linked to YoLink motion sensor or YoLink water leak sensor. Even when the internet or the power is off (need extra 2*AAA Alkaline Batteries), the Siren Alarm can still work normally with YoLink door sensor using our unique YoLink Control.

If you are using the Andriod system, you can set the ring for your APP notification on your phone settings -> Sound and Notification; Apple has disabled the notification settings.


  • Question: Are the sensors weatherproof? / Are these outdoor use?


Sorry, YoLink Door Sensor is not weatherproof and waterproof.
If you use it outdoor, please wrap it and keep it away from rain or water.


  • Question: The hub shows online but the door sensors still show offline. Any suggestions?


Really sorry for the problem caused.

1. Please check the network status of the YoLink Hub to see if the hub is online
2. Please check as follows,
(1) Press the SET button of the door sensor to check whether the LED indicator of the device has light: red light flashes once/green light flashes
a. Red light flashes once: check whether the door sensor is working normally, the operation has no specific meaning
b. Green light flashes: the door sensor is connecting to the internet
(2) If there is no light, the battery of the door sensor may be out of power.
Can you please replace the battery? You can refer to the video https://youtu.be/UbuE2_ukrU4 for how to replace.
After replacing the battery, press the SET button to re-connecting to the internet
(3) Please check in the YoLink App to see if the display status of the device changes, or the device is online
3. Please check the communication environment between the door sensor and the YoLink Hub.
How long is the distance between the door sensor and the hub?
Any obstacles between the door sensor and the hub?
Please avoid placing the door sensor in semi-closed/restricted scenarios such as underground wells/pits.
The signal strength has a great relationship with the placement position.
4. If those can’t solve the problem, please contact us at service@yosmart.com.


  • Question: Can the door/window sensor work without the hub?


YoLink devices including YoLink sensors need a YoLink Hub.
YoLink Hub is used as the central controller to connecting devices to the internet and the cloud. And One YoLink hub supports more than 200 YoLink devices in real test. 

The YoLink APP functions and the integration with Alexa, Google Assistant and IFTTT work throught YoLink Cloud. So YoLink Hub is required for YoLink Door Sensor.

With YoLink Hub, the YoLink Door Sensor can be used to detect the open or close of your doors, windows, and so on. Also with YoLink Hub, YoLink Door Sensor will work with Alexa and IFTTT, you can create routines at Alexa APP, and create “IF THIS THEN THAT” via IFTTT APP.


  • Question: Does it matter which sensor part is at the door? Can I stick the bigger sensor to the door? Also, what are the measures of each part? 


Please refer to the following steps to install your YoLink Door Sensor.

1, Install the large part – the sensor on the door frame (the side that does not move frequently)
2. Install the small part – themagnet on the door (the side that is frequently moving)
3. Align the semi-circle on the sensor with the semi-circle on the magnet.
4. keep the distance between the sensor and the magnet les than 18mm when closed.
Please kindly refer to https://youtu.be/cLFCb2TI2fY on Part 2 – Installation to get the detailed information.


  • Question: I’d like to purchase several sensors for my doors and windows. But, I’m a little worried they won’t fit – can you let me know the size of these: 


YoLink door sensor will work on all types of doors and windows if the installation of the door sensor is completed correctly.
The YoLink door sensor comes with two parts, a sensor (31*83*15mm) and a magnet (11*63*12mm).
You can visit https://youtu.be/cLFCb2TI2fY on Part 2 – Installation to get the detailed information.


  • Question: Can my son turn off the sensor with the button on it and if so will I get a notification?


Long press the SET button for 20-25s will turn off the device, then you might not receive notifications.


  • Question: Does this sensor use an NC reed switch?


The YoLink Door Sensor is using the NO reed switch.


  • Question: If I am not at home will I still be notified if my door is opened?


Yes, it will. Please kindly confirm you have turned on the notifications at first. There are three placed relating to the notifications.

First, the device alert in detail page, the door sensor supports 4 types of alert settings: Don’t Alert/Door is opened/Door is closed/Door is opened or closed. The default setting is “Door is opened or closed”, and the default alert is turned on.

Second, the alarm strategy – you can set different strategies for different sensors.

Third, the advanced settings in your profile.


  • Question: The text messages for the open/close door only notifies me when the door is open not closed


The SMS notifications will incur extra fees from mobile carriers. Some customers suggest to reduce unnecessary notifications to reduce this charge. The SMS notifications only push the open alert.


  • Question: Just bought YoLink hub and two door sensors. I have them setup and working, but I am having trouble with the smart function and having automation. I am not able to set any behaviors. I can’t setup any automation with specifying a behavior. I hit the plus sign for a behavior and there is nothing I can do in that section. How do I select a behavior??????


Only door sensor cannot set up smart automation in YoLink APP.
The door sensor can only work as the trigger device. Thus you can choose your door sensor as “IF”, but there is no device that works as “THEN”.
If you have the YoLink door sensor and the YoLink smart plug mini, you can choose IF “Door Sensor – Door open” then “Plug Mini – Turn on”.
Please watch the following video about how to create automation in YoLink APP.

YoLink Door Sensor works with Alexa, you can create routines in Alexa to get voice announcements, and you can check the status for your sensor; YoLink Door Sensor works with IFTTT, if you have any other smart action devices like smart plugs, you can use your door sensor to trigger them.
About how to create routines in Alexa and how to connect to IFTTT, please visit https://youtu.be/cLFCb2TI2fYon Part 4 – Alexa Integration, Part 5 – IFTTT Integration.


  • Question: Is there a way to have one of the sensors activate a chime? An outdoor chime that notifies people that the gate was opened. A chime, not a siren


Sorry we did not have chime for the YoLink Door Sensor at present. We have a YoLink Siren Alarm which works with YoLink Sensors and sends audio alarms. Its Link: https://www.amazon.com/dp/B0887SMPKK
YoLink Door Sensor works with Alexa and IFTTT. If you have a chime supporting Alexa or IFTTT. You can create routines to let the YoLink Door Sensor to trigger the chime in Alexa APP, or create applets to let YoLink Door Sensor to trigger the chime in IFTTT APP.