SONOFF DW2-WiFi Door Window Sensor, Mini Wireless Door Window Alarm System, Smart Monitoring Device for Home Security, Works with Alexa and Google Home, 2.4 GHz WiFi Only, No Hub Required : ��غ��.co.uk: DIY & Tools

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SONOFF DW2-WiFi Door Window Sensor, Mini Wireless Door Window Alarm System, Smart Monitoring Device for Home Security, Works with Alexa and Google Home, 2.4 GHz WiFi Only, No Hub Required

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Purchase options and add-ons

Colour	White
Brand	Sonoff
Power source	Battery Powered
Compatible devices	Smartphone, Alexa, Google Home
Product dimensions	48L x 22W x 72H millimetres

About this item

✔【Remote Monitoring & Send Alert Information】Put the sensor on your door or window, Your phone will receive an alert message when your's door or window is opened or closed. Both the opening and closing status of the door/window are synced on your mobile phone. (NOTE: Only support 2.4Ghz. No built-in siren, but the alert message to your phone.)
✔【Smart Scene Linkage】To crate a smart scene linkage between WiFi devices in your home. For example, The room lights up when the door is open, and the room lights go out when the door is closed.
✔【Low-battery Reminder】Real-time battery level display and low-battery reminder ensure you get clear know how long the sensor can run and when you need to replace batteries.
✔【Sharing Control】Simply share the sensor to your family on EweLink APP and they can directly check the status of the home doors and windows on the EweLink app.
✔ 【Easy and tool-free installation】3M adhesive (included) installation significantly saves your time. Its application can also extend to wide areas like drawers, garage doors, blinds, etc. to contact us via uk.amazon@itead.cc
✔【Outstanding Customer Services】7*24 Customer Service. Questions? Unsatisfied? Suggestions? Contact us! We can solve your any problems about DW2-WiFi ASAP!

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This item: SONOFF DW2-WiFi Door Window Sensor, Mini Wireless Door Window Alarm System, Smart Monitoring Device for Home Security, Works with Alexa and Google Home, 2.4 GHz WiFi Only, No Hub Required

£12.95

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SONOFF SNZB-03 ZigBee Motion Sensor 2 Packs, Wireless Motion Detector Get Alerts or Trigger Lights to Turn on, SONOFF Zigbee Bridge Required, Batteries Included

£23.46

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SONOFF Universal Zigbee 3.0 USB Dongle Plus Gateway with Antenna for Home Assistant, IoBroker, Zigbee2MQTT

£30.65

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SONOFF

Make innovation easier, lead a simple and smart life.

SONOFF Wifi Series
SONOFF Zigbee Series
SONOFF Zigbee Switch
SONOFF Wifi Series
SONOFF is fully committed to fulfilling home automation for a simple and smart life. We are focused on fields of leading wireless remote technology, reliable smart home solution, cloud service, etc.Your Smart Home Choice.

Product information

Technical Details

Battery description

‎CR2032

Number of batteries

‎1 CR2032 batteries required.

Voltage

‎3 Volts (DC)

Control method

‎App

Mounting type

‎Door Mount, Window Mount

Sensor technology

‎Contact Sensor

Manufacturer

‎Sonoff

Part Number

‎DW2 RF

Product Dimensions

‎3.1 x 1.9 x 7 cm; 30 g

Batteries

‎1 CR2032 batteries required.

Item model number

‎DW2 RF

Size

‎Small

Style

‎Wireless

Material

‎PC V0

Item Package Quantity

‎1

Certification

‎CE, FCC

Special Features

‎Turn on/off your light with an action; Notify you when the door/window is opened; Check the opening and closing status of door/window on APP; Keep linkage with SONOFF smart devices to create various smart scene

Batteries included?

‎No

Batteries Required?

‎Yes

Item Weight

‎30 g

Additional Information

ASIN

B08BC98RKR

Customer Reviews

3.6 856 ratings

3.6 out of 5 stars

��غ�� Rank

35,193 in DIY & Tools (See Top 100 in DIY & Tools)
37 in Home Security Door & Window Sensors

Date First Available

22 Jun. 2020

Warranty & Support

��غ��.com Return Policy:Regardless of your statutory right of withdrawal, you enjoy a 30-day right of return for many products. For exceptions and conditions, see Return details.

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Product Description

Can See Who Closed the Window

Add SONOFF camera or an unused smartphone, and you can view what’s going on in your home. For example, who opened or closed the window, etc.
Always Know Whether Home Is Safe

The sensor will send you a push notification immediately if someone is detected to open your door or window.
Low-battery Reminder

There is a reminder on APP if the battery level of the sensor is low.
"Ask" to Check Device Status

Check the open and closed status of your door/window via Alexa or Google Home, not just on your mobile phone.

Go Back to History Records

Automatically save message notifications. You can check history records over the last 3 months.

Install in Any Corner of Your Home

You can install this sensor in many corners, such as：Sliding Room、 Window、Hinged Room.

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Product guides and documents

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Top Brand

Sonoff

85% positive ratings from 1K+ customers

10K+ recent orders from this brand

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	This item Sonoff��SONOFF DW2-WiFi Door Window Sensor, Mini Wireless Door Window Alarm System, Smart Monitoring Device for Home Security, Works with Alexa and Google Home, 2.4 GHz WiFi Only, No Hub Required	Recommendations SENCKIT��WiFi Door and Window Sensors,Tuya Smart Alarm with Free Notification APP Control Home Security Alarm System, No Hub Required,Compatible with Alexa, Google Home (1-pack)	�� SENCKIT��WiFi Door Sensor: Smart Door Open/Closed Detectors, Wireless Window Sensor with App Notification Alert, Contact Sensor for Home Security, Compatible with Alexa Google Assistant (1pack)	�� Tapo��Smart Contact Sensor, Real-Time Monitoring Smart Window & , Instant Push Notification,Battery included,Easy Installation,Work with Alexa,Tapo Hub Required separately(TapoT110), packaging may vary	�� Fuers��WiFi Door Window Alarm Sensor with Magnetic Sensor, Wireless Door Window Contact Opening Security Alarm Compatible with Alexa Google Home, Tuya App Pushes Notification to Mobile Phone, No siren	�� VOXON��Wireless Door and Window Alarm Sensor 2 Pack 2 Modes Magnetic Window Door Burglar Alarm with 100dB Loud for Kids Safety Home Shop Security
	Try again! Details Added to Basket	Try again! Details Added to Basket	Try again! Details Added to Basket	Try again! Details Added to Basket	Try again! Details Added to Basket	Try again! Details Added to Basket
Price	£12.95	£11.91	£15.65	-17%��£12.80 RRP: £15.36	£13.21	-23%��£8.70 Was: £11.27
Delivery	Get it as soon as Wednesday, Jan 29	Get it as soon as Wednesday, Jan 29	Get it as soon as Wednesday, Jan 29	—	Get it as soon as Wednesday, Jan 29	Get it as soon as Wednesday, Jan 29
Customer Ratings	3.6856	3.91,281	3.9227	4.5880	3.678	4.41,540
Sold by	sonoff	LeTstar	LeTstar	��غ��	TongWD88	TECKNET
colour	White	1-pack	1pack	White	—	White 2 Pack
brand	Sonoff	SENCKIT	SENCKIT	Tapo	Fuers	VOXON
power source	Battery Powered	Battery Powered	Battery Powered	Battery Powered	Battery Powered	Battery Powered
compatible devices	Smartphone, Alexa, Google Home	Home Security System, Smartphone	Home Security System, Smartphone	Home Security System	Smartphone	Home Security System
battery description	CR2032	Alkaline	Lithium-Ion	Lithium-Ion	—	Alkaline

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Customer reviews

856 global ratings

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Customers say

Customers find the alarm easy to set up and integrate with Alexa. They appreciate the door sensor's functionality and simple turn-on/off. However, some customers have experienced issues with WiFi connectivity and limited range. Opinions differ on the overall functionality and battery life.

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Ease of installation Door sensor Turn on and off Functionality Battery life Wifi connectivity

16 customers mention ‘Ease of installation’12 positive4 negative

Customers find the alarm easy to set up and integrate with Alexa. They mention it's simple and effective, and they are happy with the setup.

"...Easy to install - Notifies me via notification - Simple and effective - Low cost - Two AAA batteries and install within seconds...." Read more

"...Easy to set up but a nightmare to maintain! I would have expected the batteries to last at least a month! Steer Clear!" Read more

"...be fooled this device can be for you as it was for me a pain in the backside to set up...." Read more

"...Setup is piece of cake, no wires just battery powered and simply stick on to the door with the supplied 3m sticky pad...." Read more

4 customers mention ‘Door sensor’4 positive0 negative

Customers like the door sensor. They say it's a good sensor for smart home automation and its functionality is great.

"So, functionality wise these sensors are spot on. Pared to the ewelink app no problem, then to Alexa, Goole Hone and Home Assistant...." Read more

"...It's a shame because in every other way it's a good sensor" Read more

"The door sensor works as expected...." Read more

"Amazing door sensor for your smart home automation..." Read more

4 customers mention ‘Turn on and off’4 positive0 negative

Customers appreciate the product's ability to turn on and off lights automatically. They mention it turns on and off the smart lights instantly when they walk in a room. The product also turns on nearby lights and announces entry recognition between midnight and 5am.

"...is the responsiveness, as you can see from my video, it turn on/off almost instantly...." Read more

"...to announce when the door is opened between midnight and 5am, turn on nearby lights and announce entry-recognised to anyone in there...." Read more

"...door from the main house to the garage so that it turns on and off the smart lights automatically and it works really. Good product." Read more

"...Now lights just turn on when we walk in a room" Read more

26 customers mention ‘Functionality’14 positive12 negative

Customers have different experiences with the product's functionality. Some say it works well when powered, and is easy to install and setup. Others report issues like routines not working, slow response times, and device malfunctioning after a short period of use.

"...Easy to install - Notifies me via notification - Simple and effective - Low cost - Two AAA batteries and install within seconds...." Read more

"...after a further 12 hrs they stopped working. Maybe I had a bad batch of batteries. Bought new batteries and fitted them...." Read more

"So, functionality wise these sensors are spot on. Pared to the ewelink app no problem, then to Alexa, Goole Hone and Home Assistant...." Read more

"...Other than that it works well. Any ideas how I can hard wire it???" Read more

14 customers mention ‘Battery life’6 positive8 negative

Customers have different experiences with the battery life of the alarm. Some say it hasn't dropped in months, while others report that the batteries last only 3 days or less.

"...Setup is piece of cake, no wires just battery powered and simply stick on to the door with the supplied 3m sticky pad...." Read more

"...Battery life is terrible, the first set of batteries (2xAAA) I used lasted for about 7 days. The second set only lasted less than 3 days!..." Read more

"...or closed sent to my phone, quick to set up, and the battery hasn’t gone down in months." Read more

"Not good with battery consumption, this is one of the few Sonoff products that disappointed me...." Read more

11 customers mention ‘Wifi connectivity’0 positive11 negative

Customers are dissatisfied with the alarm's WiFi connectivity. They report issues like it disconnecting from WiFi, having a limited WiFi range, and not sleeping properly. The pairing feature is also described as flaky, and the unit goes off line frequently.

"...these are battery powered devices and as such the have a VERY limited WiFi range...." Read more

"...Battery went down to 70% after just a few hours, and then became erratic until was completely drained a few hours later...." Read more

"...Its pairing feature is very flaky on both normal pairing mode and compatible mode...." Read more

"This keeps disconnecting from my wifi and its only 3 meters away from it , batteries seem to go fast as well , but its basically offline all of the..." Read more

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Top reviews from United Kingdom

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uk-bill
These work fantastic
Reviewed in the United Kingdom on 21 September 2021
Verified Purchase

The media could not be loaded.

If, like me, you have kids that leave the freezer open, and you go to it the next day and find all your expensive meats thawed out, it drives me crazy I have to throw all that meat in the bin. Well no more wasted meat!!!

I like this because.....
- Easy to install
- Notifies me via notification
- Simple and effective
- Low cost
- Two AAA batteries and install within seconds. I use amazon basics researchable batteries, these are great too.

Hope you like it like me :) Well done sonoff, big fan!

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Keith
Not Fit for purpose
Reviewed in the United Kingdom on 25 August 2021
Verified Purchase
I was impressed how easily these were to set up electronically. Although I did have a little difficulty in siting the one on a door that did not close flush with the frame as both the items need to be lined up flush. Initially I was quite happy with the setup. So much so that I nearly ordered more. However, 24 hrs later and I was being advised to change the batteries. after a further 12 hrs they stopped working. Maybe I had a bad batch of batteries. Bought new batteries and fitted them. Hey presto everything working fine again. That was short lived. 12 hrs later I'm being advised to change the batteries. So unless you intend to change the batteries every day then they probably aren't what you want. Easy to set up but a nightmare to maintain! I would have expected the batteries to last at least a month!

Steer Clear!

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Phil
Works well but WiFi has its limits
Reviewed in the United Kingdom on 22 November 2020
Verified Purchase
So, functionality wise these sensors are spot on. Pared to the ewelink app no problem, then to Alexa, Goole Hone and Home Assistant. However, these are battery powered devices and as such the have a VERY limited WiFi range.I have one device with a 2.5m direct line if sight to the WiFi AP and the RSSI is -89db, my second device is 5m from the same AP and is reporting -101db (my phone reports -56db at the same position). These figures are appallingly bad, but just enough to be functional. In summary, your going need excellent WiFi coverage for these sensors to work. Look at the RSSI figure on your phone at the position you want to place the sensor. If this is -60db and up, then forget it.

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Ale Sarco
Short battery life (it was defective)
Reviewed in the United Kingdom on 11 September 2024
Verified Purchase
Unless the unit I got is somehow defective (but I'm not going to buy another one to try it), this product is a joke. Battery life is terrible, the first set of batteries (2xAAA) I used lasted for about 7 days. The second set only lasted less than 3 days!
Look at the graph taken from Home Assistant, the one named as "Fridge Door Battery" is this Sonoff sensor. Battery went down to 70% after just a few hours, and then became erratic until was completely drained a few hours later. Compare to the other graph (Contact Sensor Batter), this is from another similar sensor (different brand), but the battery has been solidly constant at 100% during the last 3 days.
Battery is supposed to last for about a year in these kind of sensors. I already spent more in batteries than the sensor itself, and now I'm with a useless piece of plastic.
The sensor itself works well when is powered

Update 03/10: Sonoff after-sales contacted me and after a few tests, they recognised the product was defective. They offered sending me a new sensor, but since I've already got another one, I opted for a refund, which they promptly did.

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Ale Sarco

Short battery life (it was defective)
Reviewed in the United Kingdom on 11 September 2024
Unless the unit I got is somehow defective (but I'm not going to buy another one to try it), this product is a joke. Battery life is terrible, the first set of batteries (2xAAA) I used lasted for about 7 days. The second set only lasted less than 3 days!
Look at the graph taken from Home Assistant, the one named as "Fridge Door Battery" is this Sonoff sensor. Battery went down to 70% after just a few hours, and then became erratic until was completely drained a few hours later. Compare to the other graph (Contact Sensor Batter), this is from another similar sensor (different brand), but the battery has been solidly constant at 100% during the last 3 days.
Battery is supposed to last for about a year in these kind of sensors. I already spent more in batteries than the sensor itself, and now I'm with a useless piece of plastic.
The sensor itself works well when is powered

Update 03/10: Sonoff after-sales contacted me and after a few tests, they recognised the product was defective. They offered sending me a new sensor, but since I've already got another one, I opted for a refund, which they promptly did.

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Jing Ren
Amazing door sensor for your smart home automation
Reviewed in the United Kingdom on 12 October 2020
Verified Purchase
I bought this product with a attempt of simply trying to expand the functionality of my current sonoff light switch. However after reading some negative comments about it, I have to say it did almost put me off from buying this great product

I have been using this for almost 2 weeks and I have never come across with any issues what so ever. Setup is piece of cake, no wires just battery powered and simply stick on to the door with the supplied 3m sticky pad. What amaze me the most is the responsiveness, as you can see from my video, it turn on/off almost instantly.

For those who used the ewelink app, this is not going to any issues, you just simply setup the the device to trigger an action on your WiFi switch using 'scene'.

Please don't let the negative comments put you off buying this great product and try it out yourself. I will give me more stars if I could simply because the functionality/cost.

Read more

Jing Ren

Amazing door sensor for your smart home automation
Reviewed in the United Kingdom on 12 October 2020
I bought this product with a attempt of simply trying to expand the functionality of my current sonoff light switch. However after reading some negative comments about it, I have to say it did almost put me off from buying this great product

I have been using this for almost 2 weeks and I have never come across with any issues what so ever. Setup is piece of cake, no wires just battery powered and simply stick on to the door with the supplied 3m sticky pad. What amaze me the most is the responsiveness, as you can see from my video, it turn on/off almost instantly.

For those who used the ewelink app, this is not going to any issues, you just simply setup the the device to trigger an action on your WiFi switch using 'scene'.

Please don't let the negative comments put you off buying this great product and try it out yourself. I will give me more stars if I could simply because the functionality/cost.

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Dislexick
Couldn't be simpler
Reviewed in the United Kingdom on 8 January 2023
Verified Purchase
Very simple to install and operate / set up. Need to make sure 2.4ghz wifi but after initial set up, I can return to mixed 2.4/5.

Very happy - used with ��غ�� alexa rules to announce when the door is opened between midnight and 5am, turn on nearby lights and announce entry-recognised to anyone in there.

Very happy

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Pole
Terrible with battery consumption,
Reviewed in the United Kingdom on 13 November 2024
Verified Purchase
Not good with battery consumption, this is one of the few Sonoff products that disappointed me. SONOFF should release a newer version that is not battery hungry.

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THE STEADS
What a pile of rubbish!! This device needs more development!!
Reviewed in the United Kingdom on 3 April 2021
Verified Purchase
On looks yeah good clean design with a single flashing white light however do not be fooled this device can be for you as it was for me a pain in the backside to set up. Its pairing feature is very flaky on both normal pairing mode and compatible mode. In compatible mode the device asks you to connect to a device named ITEAD-100000 I tried numerous phones and none picked up the device named.

I suggest Sonoff take a deeper look into this device!

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Tom Y.
I really like this
Reviewed in the United States on 18 October 2024
Verified Purchase
I use it in the mailbox in our front yard. I was concerned that the WiFi range would be an issue but the signal strength is very good. The batteries are AAA. So replacing them is affordable.

I use it in Home Assistant to notify us when we have mail. It is 100% reliable for us. Highly recommend it.

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Fabio
Veio com defeito
Reviewed in Brazil on 3 October 2023
Verified Purchase
Eu já tenho outros produtos da mesma marca, já realizei o processo de emparelhamento, os sensores são descobertos mas não ficam ONLINE de forma alguma, independentemente do local onde eles estejam, mesmo sendo do lado do roteador que está exclusivamente em 2.4Ghz. Tenho vários dispositivos da SONOFF em minha casa, mas esses dois, assim como o colega que relatou defeito, compramos na mesma época e ambos não vieram funcionando. Solicitei o retorno e cancelamento do pedido, que por sinal, demorou MUITO tempo para chegar...

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Daniel Lugo Ramirez
Sensor funcional
Reviewed in Mexico on 22 March 2022
Verified Purchase
Lo instale en la puerta, es muy preciso, con la App me envia mensajes de cuando se abrio la puerta, lo recomiendo ampliamente y lo mejor usar un dispositivo sin cables.

Nota: Me ocasiono problemas al inicio pues el 'Bridge Sonoff' estaba lejos de alcance pero una vez correjido ese problema me funciona a la perfeccion.

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Peter Oehlen
Besser als manch teure Lösung
Reviewed in Germany on 10 January 2025
Verified Purchase
Mache alles mit Sonoff und bin sehr zufrieden

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Julien B
Capteur de porte
Reviewed in France on 4 January 2025
Verified Purchase
Capteur de bonne facture. Attention cependant, il n’est compatible que sur les réseaux Wifi 2.4 GHz b (pas de G ni de N)
Assurez-vous que votre box ou point d’accès wifi diffuse ce type de wifi (ancienne norme)

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SONOFF DW2-WiFi Door Window Sensor, Mini Wireless Door Window Alarm System, Smart Monitoring Device for Home Security, Works with Alexa and Google Home, 2.4 GHz WiFi Only, No Hub Required

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About this item

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From the brand

SONOFF

SONOFF Wifi Series

SONOFF Zigbee Series

SONOFF Zigbee Switch

SONOFF Wifi Series

Product information

Technical Details

Additional Information

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Where did you see a lower price?

Product Description

Can See Who Closed the Window

Always Know Whether Home Is Safe

Low-battery Reminder

"Ask" to Check Device Status

Go Back to History Records

Install in Any Corner of Your Home

Looking for specific info?

Product guides and documents

Compare with similar items

Similar brands on ���غ���

Customer reviews

Review this product

Customers say

Reviews with images

Short battery life (it was defective)

Top reviews from United Kingdom

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Top reviews from other countries

5.0 out of 5 stars I really like this

1.0 out of 5 stars Veio com defeito

5.0 out of 5 stars Sensor funcional

5.0 out of 5 stars Besser als manch teure Lösung

5.0 out of 5 stars Capteur de porte

Similar brands on ��غ��

I really like this

Veio com defeito

Sensor funcional

Besser als manch teure Lösung

Capteur de porte