WiFi Door Window Sensor: Smart Contact Sensor with App Alerts, Door Open Detector Compatible with Alexa Google Assistant, Entry Detector Sensor for Home Security and Home Automation (2-Pack)

WiFi Door Window Sensor: Smart Contact Sensor with App Alerts, Door Open Detector Compatible with Alexa Google Assistant, Entry Detector Sensor for Home Security and Home Automation (2-Pack)

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WiFi Door Window Sensor: Smart Contact Sensor with App Alerts, Door Open Detector Compatible with Alexa Google Assistant, Entry Detector Sensor for Home Security and Home Automation (2-Pack)
Price: $19.68
(as of Jan 13,2026 05:54:17 UTC – Details)

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Customers say

Customers find the door window sensor simple to install. The functionality and connectivity receive mixed reviews, with some reporting flawless operation while others experience connectivity issues. The sensor quality, notification delay, value for money, alarm settings, and alarm volume also get mixed feedback.

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16 customers mention ease of installation, 13 positive, 3 negative

Customers find the door sensor easy to install, with one mentioning that the Smart Life app is straightforward to set up.

Easy to install and works great, my only issue is the voice notification is in chinese with no way that I can find to change it to englishRead more

…Installation was a breeze thanks to the included double-sided tape….Read more

I replaced my soon to be useless Nest sensors. These are easily installed, easy to setup in the smartlife app, and notify me when the doors open and…Read more

…Good price, fairly easy to install, wish it worked with 5gRead more

25 customers mention functionality, 17 positive, 8 negative

Customers report mixed experiences with the sensor's functionality, with some saying it works flawlessly while others mention that it goes offline.

It works well but annoying with door constantly being opened and closed. The adhesive sucks but other then that it’s greatRead more

Easy to install and works great, my only issue is the voice notification is in chinese with no way that I can find to change it to englishRead more

…The issue is after a day or 2 it goes offline and cannot be reconnected. Followed every instruction and FAQ advice with no solution working….Read more

…This will allow me to automatically turn off the fan/AC when the front door is open during the summer, saving energy.Read more

16 customers mention connectivity, 7 positive, 9 negative

Customers have mixed experiences with the sensor's connectivity, with some successfully integrating it with Alexa devices and SmartThings, while others report connection issues, with one customer noting it won't stay connected to Wi-Fi.

Does not connect with Alexa.Read more

Easy to install and connect to the Wi-Fi. However, you will need a very strong Wi-Fi connection for these to work consistently.Read more

Had them working then one disconnected for no apparent reasons. Directions saying to reset and hold power buttons that the device doesnt even have….Read more

…3. SmartThings integration – shockingly good! I was able to setup routines based on the sensor state (open or close)….Read more

14 customers mention sensor quality, 9 positive, 5 negative

Customers have mixed opinions about the sensor quality, with some finding it great while others report issues.

This is a great sensor and perfect for your home door or window. Can integrate with Alexa & create routines. Will be buying more….Read more

…It like no alarm, or a huge panic alarm. Nothing in between.Read more

Great product. Does what I need it to. Debating on buying some more for the freezer/fridge in garage that the kids keep leaving open….Read more

Work nice and that app is excellent not only for this item different items at your houseRead more

6 customers mention notification delay, 4 positive, 2 negative

Customers have mixed experiences with the notification delay of the sensor, with some reporting delays and one customer noting timely alerts, while another mentions that notifications are only sporadic.

…installed, easy to setup in the smartlife app, and notify me when the doors open and close and I can set smart rules for actions….Read more

…This item works well….there is about a 7 second delay for notifications though….Read more

…This prevents constant, unnecessary notifications from brief door openings, like when I'm quickly grabbing something….Read more

…Were easy to install and setup on my phone. The notification is great from each unit….Read more

6 customers mention value for money, 3 positive, 3 negative

Customers have mixed opinions about the value for money of the door sensor, with some finding it good priced while others consider it a waste of money.

…Good price, fairly easy to install, wish it worked with 5gRead more

…You won’t be notified if you’re not actively using the app. Waste of money.Read more

…For such an affordable price, this sensor provides excellent peace of mind. The ability to set a delay is a fantastic feature….Read more

…but no you can’t, you have your pay to use it, it was a waste of my hard earned money 👎😡…Read more

3 customers mention alarm settings, 1 positive, 2 negative

Customers have mixed opinions about the alarm settings, with one customer appreciating the ability to configure the sensor, while another finds there are not enough options available.

…Even if it did, there’s not enough options for the alarm settings. It like no alarm, or a huge panic alarm. Nothing in between.Read more

…What's even better is that I was able to configure the sensor to send alerts only after the door has been open for more than 30 seconds….Read more

…1 of 2 sensors down. Not much faith that the other one will work too much longerRead more

3 customers mention alarm volume, 1 positive, 2 negative

Customers have mixed opinions about the alarm volume, with some finding the notification ring loud, while one customer reports no audible alarm at all.

No audible alarm, just app notification Poor Instructions and no help section…Read more

What I like most is that the notification ring is loud, waking you up I’m at night if needed….Read more

…The default notifications have poor grammar. The apps use an incredibly annoying audible alert when the sensor opens/closes. 2….Read more


1+ years review and No-Fail Pairing Instructions

5 out of 5 stars

1+ years review and No-Fail Pairing Instructions
We've been using one of these on our back swinging door for over a year. The door sees a lot of foot traffic. I actually have it set up along the back edge of where the door opens (hinge side) so it won't get knocked off the door amidst the numerous opening/closing it goes through. I'm the year, we have changed batteries twice. I the second go-round I used rechargeable AAAs. This time I'm using Energizer Ultimate Lithium AAAs to see how long they last. I also installed one inside of our mailbox and set up a Smart (routine) to turn our LED lights on the back of our TV to pink once the mail box is opened/closed by the carrier, so we have no more failed mail checks. It works flawlessly. See photos for reference. How to pair with your Wi-Fi: Download the Smart Life app and press the + in the upper right corner to add the sensor. Select Wi-Fi on your phone and join your 2.4ghz band. If you don't do this, you won't be able to connect. After adding batteries to the sensor, press and hold the RESET button on the end of unit using something little and sharp such as a skewer or needle. If you don't do this, it won't connect. The red light will start flashing, first kind of slowly, and then the flashing speeds up. The app should pick up the sensor. Follow the prompts and let it do its thing. If for some reason the Smart Life app doesn't see your new sensor, double check that your phone is connected on the 2.4 GHz wifi band, reset the unit again as above, and manually add it by pressing +, selecting the 'Sensors' category on the left, and choose the "Contact Sensor (Wi-Fi)" from the list, and follow the prompts. Be sure to edit the sensor name to something specific to meet your needs and so it is unique from other sensors ("Cookie Cabinet"). Now you're good to go. Play with the Smart feature of the app to set up routines to interact with other devices using this app.
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Top reviews from the United States


  • M. C. Payette

    5.0 out of 5 stars

    1+ years review and No-Fail Pairing Instructions

    Reviewed in the United States on June 30, 2024

    Color: 4packVerified Purchase

    We've been using one of these on our back swinging door for over a year. The door sees a lot of foot traffic. I actually have it set up along the back edge of where the door opens (hinge side) so it won't get knocked off the door amidst the numerous opening/closing it goes through. I'm the year, we have changed batteries twice. I the second go-round I used rechargeable AAAs. This time I'm using Energizer Ultimate Lithium AAAs to see how long they last.

    I also installed one inside of our mailbox and set up a Smart (routine) to turn our LED lights on the back of our TV to pink once the mail box is opened/closed by the carrier, so we have no more failed mail checks. It works flawlessly. See photos for reference.

    How to pair with your Wi-Fi:

    Download the Smart Life app and press the + in the upper right corner to add the sensor. Select Wi-Fi on your phone and join your 2.4ghz band. If you don't do this, you won't be able to connect. After adding batteries to the sensor, press and hold the RESET button on the end of unit using something little and sharp such as a skewer or needle. If you don't do this, it won't connect. The red light will start flashing, first kind of slowly, and then the flashing speeds up. The app should pick up the sensor. Follow the prompts and let it do its thing. If for some reason the Smart Life app doesn't see your new sensor, double check that your phone is connected on the 2.4 GHz wifi band, reset the unit again as above, and manually add it by pressing +, selecting the 'Sensors' category on the left, and choose the "Contact Sensor (Wi-Fi)" from the list, and follow the prompts. Be sure to edit the sensor name to something specific to meet your needs and so it is unique from other sensors ("Cookie Cabinet"). Now you're good to go. Play with the Smart feature of the app to set up routines to interact with other devices using this app.

    Customer image


    M. C. Payette

    5.0 out of 5 stars

    1+ years review and No-Fail Pairing Instructions

    Reviewed in the United States on June 30, 2024


    We've been using one of these on our back swinging door for over a year. The door sees a lot of foot traffic. I actually have it set up along the back edge of where the door opens (hinge side) so it won't get knocked off the door amidst the numerous opening/closing it goes through. I'm the year, we have changed batteries twice. I the second go-round I used rechargeable AAAs. This time I'm using Energizer Ultimate Lithium AAAs to see how long they last.

    I also installed one inside of our mailbox and set up a Smart (routine) to turn our LED lights on the back of our TV to pink once the mail box is opened/closed by the carrier, so we have no more failed mail checks. It works flawlessly. See photos for reference.

    How to pair with your Wi-Fi:

    Download the Smart Life app and press the + in the upper right corner to add the sensor. Select Wi-Fi on your phone and join your 2.4ghz band. If you don't do this, you won't be able to connect. After adding batteries to the sensor, press and hold the RESET button on the end of unit using something little and sharp such as a skewer or needle. If you don't do this, it won't connect. The red light will start flashing, first kind of slowly, and then the flashing speeds up. The app should pick up the sensor. Follow the prompts and let it do its thing. If for some reason the Smart Life app doesn't see your new sensor, double check that your phone is connected on the 2.4 GHz wifi band, reset the unit again as above, and manually add it by pressing +, selecting the 'Sensors' category on the left, and choose the "Contact Sensor (Wi-Fi)" from the list, and follow the prompts. Be sure to edit the sensor name to something specific to meet your needs and so it is unique from other sensors ("Cookie Cabinet"). Now you're good to go. Play with the Smart feature of the app to set up routines to interact with other devices using this app.

    Images in this review


    Customer image

    Customer image

    8 people found this helpful

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  • Damian R.

    5.0 out of 5 stars

    Not Disappointed

    Reviewed in the United States on March 14, 2025

    Color: 4packVerified Purchase

    I recently purchased this WiFi door sensor to help keep my crawling baby safe, and I'm very happy with the results. Installation was a breeze thanks to the included double-sided tape. I simply peeled and stuck it to my basement door frame and the sensor itself to the door.

    Setting it up with the Smart Life app was equally straightforward. What's even better is that I was able to configure the sensor to send alerts only after the door has been open for more than 30 seconds. This prevents constant, unnecessary notifications from brief door openings, like when I'm quickly grabbing something. Now, I receive an instant alert whenever the basement door is left open for an extended period. This is a huge relief, as it prevents my little one from potentially crawling down the stairs.

    The sensor is responsive and the notifications are timely. For such an affordable price, this sensor provides excellent peace of mind. The ability to set a delay is a fantastic feature. Beyond baby safety, I'm also planning to tie this sensor into my wireless thermostat. This will allow me to automatically turn off the fan/AC when the front door is open during the summer, saving energy.

    One person found this helpful

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  • JR

    4.0 out of 5 stars

    They work

    Reviewed in the United States on November 5, 2025

    Color: 4packVerified Purchase

    These work fine. My only complaint is that the app could be better. It would be nice to be able to set up different notification sounds for each sensor. As it is now only one sound can be selected, and it will be the same for all of the sensors.


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  • Themanfriday

    1.0 out of 5 stars

    Non Functional after 2 days

    Reviewed in the United States on June 10, 2024

    Color: 4packVerified Purchase

    DO NOT PURCHASE!!! First, let me say I am very technically capable and my house is almost fully automated. Product installation is very easy and looks clean. The issue is after a day or 2 it goes offline and cannot be reconnected. Followed every instruction and FAQ advice with no solution working. I looked in the comments and see this issue is very common and will advise everyone to DO NOT BUY!!!

    Returning item for a refund.

    8 people found this helpful

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  • Derekbx1

    5.0 out of 5 stars

    Great replacement for Nest sensors

    Reviewed in the United States on January 28, 2024

    Color: 4packVerified Purchase

    I replaced my soon to be useless Nest sensors. These are easily installed, easy to setup in the smartlife app, and notify me when the doors open and close and I can set smart rules for actions. Way better than Nest sensors.

    2 people found this helpful

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  • DigitalBrad

    3.0 out of 5 stars

    Terrible app support. Works with SmartThings

    Reviewed in the United States on November 28, 2024

    Color: 2packVerified Purchase

    The sensors work correctly, but the user experience will either be OK or unacceptable depending on your ecosystem.
    1. Native apps (Tuya and Smart Life) – very basic. The default notifications have poor grammar. The apps use an incredibly annoying audible alert when the sensor opens/closes.
    2. Google Home integration – absolute failure here. The sensor can be added to your Google Home ecosystem, but the state shows up as “charging” or “not charging”, not “open” or “close”. I was unable to get any smart routines to work with this device.
    3. SmartThings integration – shockingly good! I was able to setup routines based on the sensor state (open or close). I was able to setup a simple alert if the sensor was “open” for longer than an hour.

    Customer image


    DigitalBrad

    3.0 out of 5 stars

    Terrible app support. Works with SmartThings

    Reviewed in the United States on November 28, 2024


    The sensors work correctly, but the user experience will either be OK or unacceptable depending on your ecosystem.
    1. Native apps (Tuya and Smart Life) – very basic. The default notifications have poor grammar. The apps use an incredibly annoying audible alert when the sensor opens/closes.
    2. Google Home integration – absolute failure here. The sensor can be added to your Google Home ecosystem, but the state shows up as “charging” or “not charging”, not “open” or “close”. I was unable to get any smart routines to work with this device.
    3. SmartThings integration – shockingly good! I was able to setup routines based on the sensor state (open or close). I was able to setup a simple alert if the sensor was “open” for longer than an hour.

    Images in this review


    Customer image

    5 people found this helpful

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  • TexDoug

    5.0 out of 5 stars

    Using in the freezer, refrigerator and outdoors

    Reviewed in the United States on July 24, 2023

    Color: 4packVerified Purchase

    I wasn't sure that the wi-fi would work from the refrigerator and freezer, but they did. I must mention that I have a wi-fi mesh satellite within 6 ft or the refrigerator, so I can't guarantee that they will work for everyone from within a refrigerator. I had lost a lot of food due to our cheap 2nd refrigerator getting hot because the door was not shut all the way and it doesn't have magnets to pull the door to. Now I get a notification on my phone if the temp is above 42°. I can also ask Alexa what it the refrigerator temperature or what is the patio temperature. I haven't measured these against another thermometer so I don't know how accurate they are. I can tell you that I have been alerted that the refrigerator temp was over 42° and the door was slightly open. So it paid for itself already.

    One person found this helpful

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  • Steven

    5.0 out of 5 stars

    Easy to install

    Reviewed in the United States on October 5, 2023

    Color: 4packVerified Purchase

    I like the size of the units. Were easy to install and setup on my phone. The notification is great from each unit. If you want a text or email notification you have to pay a subscription but if you just want the open close notification it is free. Also will let you know when the battery is low. I also linked to Alexa which you can ask Alexa if the window/door is open closes but the app will tell you also. You can go back an see the times in which the door or window was opened and closed

    2 people found this helpful

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  • magali s.
    5.0 out of 5 stars

    super practico

    Reviewed in Mexico on March 14, 2024

    Color: 2packVerified Purchase

    facil de instalar, y me sirvió mucho mas de lo que pensaba



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Product Summary: WiFi Door Window Sensor: Smart Contact Sensor with App Alerts, Door Open Detector Compatible with Alexa Google Assistant, Entry Detector Sensor for Home Security and Home Automation (2-Pack)

From Gaoducash
WIiFi Door Sensor with App Alerts: Smart security sensor, Tuya smart app or Smart life app control; when door/window is opened or closed, the sensor will push app notification alerts to your smartphone. Door status, All alarm record history and battery power can be check in app. You can also share Wireless Security Alarm with your family.
Suport Voice Control: No hub required; Simple setup! Wifi garage sensor compatible with Amazon Alexa and Google Assistant. For example, you could say, “Alexa, is the “Device’ Name>” Clsoed/Opened?”
Programmable Sensor: Extend your smart home automation with wifi window sensor; Set up your smart routines in Tuya Smart/Smart life app or Alexa; For example, Automatically turn on your smart wall switches or lights when door opened.
Easy Installation: Without tools, Easy installa the door sensor with included 3M sticker, firm and durable. You can install the alexa door sensor on front doors, garage doors, liquor cabinets, safety deposit box, pet doors and more. The contact sensor is also a good option as a mailbox sensor.
Low Power Warning& Batteries Included: The sensor door comes with TWO AA Batteries for 1 year monitoring. When the battery is running out, you will receive an App notification, Don’t worry about missing any moment.

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