Meross Smart Door Window Sensor, Mini Contact Sensor for Security and Home Automation, WiFi Alarm System, Real-Time Alert, Works with HomeKit, Alexa, Google, SmartThings, Meross Hub Included Start Kit
Original price was: £169.99.£24.57Current price is: £24.57.
Price: £169.99 - £24.57
(as of Jun 09, 2025 18:03:48 UTC – Details)
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Simple devices that simplify your life.
Meross, founded in 2016 by a group of experts from leading companies, is replete with both first-class creativity and cutting-edge innovation.
All meross products are reliable, compliant, and high-quality products.
We have good after-sales service and can provide detailed instructions for use.
All meross products can enjoy lifetime technical service.
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Compact And Easy To Install: The new mini stylish design doesn’t take up any extra space. No tools are required; just peel off the tape and stick it where you want it. The maximum installation distance of the magnetic sensor reaches 24mm, which can meet the installation requirements of more complex conditions. Mini main sensor size (57 x 31 x 15 mm) Secondary sensor size (28 x 15 x 11 mm).
Real-time Alert Notifications: Get alerts instantly in your Meross app so you can stay informed of important alerts related to your smart door sensors, wherever you are, giving you peace of mind and allowing you to take quick action when necessary.
Superior Versatility: One hub can control up to 16 Meross sensor devices. The hub utilizes a 433MHz low-power connection solution and boasts better wall penetration capabilities, with a communication distance of up to 100 meters (in open areas). The product is equipped with a replaceable button battery. With the low-power design, the battery life can last up to 2 years. Historical data can be recorded for free (up to 2 years) and can be exported for security inspection at any time.
Home Device Automation: Take your home automation to the next level with the Meross Door Sensor. Easily set up triggers to control other HomeKit and Meross devices using simple automation settings, such as having your home lights turn on when the door opens. Explore more linkages waiting for you to discover.
Customers say
Customers find the door sensor easy to set up, particularly with Alexa integration, and appreciate its functionality, with one customer noting it works reliably within the Google ecosystem. They consider it a good affordable product. However, the sensor’s reliability receives mixed feedback, with several customers reporting that it constantly disconnects.
6 reviews for Meross Smart Door Window Sensor, Mini Contact Sensor for Security and Home Automation, WiFi Alarm System, Real-Time Alert, Works with HomeKit, Alexa, Google, SmartThings, Meross Hub Included Start Kit
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Original price was: £169.99.£24.57Current price is: £24.57.
Chetan Barai –
Reliable Sensor with Minor Limitations â Consider the Ecosystem
Iâve used this door/window sensor in multiple locations and have been impressed with its overall reliability and performanceâenough to purchase additional units. It pairs easily with the included hub and reports open/close states quickly and consistently.One of the standout features for me is how well it integrates with Google Home, which I actively use in my smart home setup. The setup was seamless, and it has worked reliably within the Google ecosystem. There is also integration with Alexa and Apple HomeKit, although I haven’t personally used those platforms to confirm performance.The hub included with this sensor can be used with other products from the same brand, making it a great addition to a larger ecosystem of devices. However, it’s worth considering the broader product lineup and how everything integrates before purchasing, especially if you plan to expand your setup.The hub can experience some interference from other nearby devices, which may occasionally affect communication stability. Itâs a minor issue but something to keep in mind if you have many devices in your network.Battery life reporting has been inconsistent. During the winter months, one of my sensors sensor showed single-digit battery levels, but despite that, I havenât changed the battery yet. Now, a couple of months later, the battery level is still around 50%. The fluctuations in reported battery life appear to be largely temperature-related, so Iâm waiting for the sensor to stop working before replacing the battery. While itâs a bit unpredictable, the actual battery life has been good overall.Overall, itâs a solid and dependable sensor with great value, especially if youâre considering it as part of a broader smart home ecosystem.
Rob Griffiths –
Easy Setup, Good Range, and Alexa Support
I bought the kit version which includes everything needed to get started, including the sensor, hub, and power supply.Installation was straightforward, guided by clear prompts in the Meross app. However, unlike some other Meross or competing smart home devices, the sensor was not automatically detected. I had to manually search for the product to begin setup, which added a small extra step. In all the setup took less than 5 minutes.The sensor functioned well throughout my home, even transmitting through a couple of thick walls. However, if the sensor is near the edge of the signal range, it may fail to send state changes, and it doesn’t appear to retry. I’m not sure if this is a common limitation of similar devices.The app take 2-4 seconds to update, which is reasonable but it would be nice for it to update instantly locally.The sensor uses a CR2450 battery, but I would prefer it to use a pair of the more common AAA. They claim that the battery life is 2 years, but I can’t confirm that yet.Replacing the battery is slightly challenging due to the tightly clipped case, but the downloadable manual provides clear instructions.The sensor can be used for automations within the Meross app, but you can also configure notification. I enabled the open for 1 minute notification so now I know if the back door has been left open.Sensor data looks like it’s stored for several years and can be exported, but it’s not clear why you would want this.Alexa integration was seamless. Just a simple click in the app, and the device appeared in the Alexa app, ready for use in routines and automations. I was able to ask Alexa “Is the back door open” and got the appropriate response about the device state.Final Thoughts:This contact sensor is a great addition to any smart home! It decently performant, has good coverage in my home, and easy integration with Alexa. While I do think there might be a small improvement to the app setup process, itâs definitely worth considering if you’ve already using other Meross devices or if you’re looking to get started for a low-price.
S. Stevens –
Longevity / Battery issues let this item down
Iâm writing this review with a heavy heart because I genuinely love the Meross products. However, I recently bought three sets of these, and they all drained the battery within a few days, even after replacing the batteries. This is quite disappointing from a longevity perspective. The appâs details were helpful, and the device worked well when it did, but I needed them while I was away on holiday and was unfortunately let down. Despite this, I wouldnât hesitate to buy other Meross products. Instead, I opted for Aqara sensors, and theyâve been working great even six months later.
Amazon Customer –
Slow notifications
On arrival I got it with dead battery but I purchased it in used condition so that is ok.Things I do not like are very slooooow notifications compared to Aqara Door Sensor P2 – mean all depends how you will threat Meross system – if as cheap toy – that’s fine you gonna be robbed and you will find out next day with delayed notification – if serious use like to find out if your kid opened window AVIOD as he or her will be dead before you will get notification
Oasis fan –
It just works…well
Do love Meross products, and I wasn’t disappointed with this. Useful bit of kit for keeping an eye on your windows or doors via notifications on the Meross app.It’s a great way to add another layer of security to your house with little outlay.
fakt –
funktioniert nach ersten Startschwierigkeiten problemlos