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  • Ring Alarm Contact Sensor (2nd Generation) - 2 pack
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Ring Alarm Contact Sensor (2nd Generation) - 2 pack

4.7 4.7 out of 5 stars (1,223)

To see the product details, add this item to your basket. You can always remove it later.
FREE Returns

Purchase options and add-ons

  • Get real-time notifications the moment a door or window opens in your home.
  • Now with a more compact design and slim removable magnets for easy installation, even when space is limited.
  • Easy, tool-free installation.
  • Mounts to doors and window frames.
  • 4 x CR2032 Lithium Coin Cell 3V.
  • Requires Ring Alarm Base Station. Compatible with 1st and 2nd generation Ring Alarm devices and accessories.
  • Alexa can notify you when your Ring Alarm Contact Sensors and Motion Detectors are running low on batteries.
Ring Alarm
Smart security with no long term commitments

Smart security with no long term commitments

Bring security inside your home. Get mobile notifications and trigger a siren when motion is detected and when doors or windows are opened. Set up your Ring Alarm in minutes without the need for tools or professional installation. Combine Ring Alarm with your Stick Up Cam or other Ring devices, and manage your home security from one central location - the free Ring app.

Do it all yourself

Do it all yourself

Everything you need to get started is in the box and works in any home. Never worry about service appointments or long-term commitments. It's that simple.

Pet-Friendly Sensors

Pet-Friendly Sensors

Pet-friendly motion detectors to avoid unnecessary notifications from pets weighing under approximately 22 kgs, when mounted at 2.1 metres above ground and set at the lowest motion sensitivity setting.

Add an extra layer of security for only £8 a month

With an optional Ring Protect Plus plan, get more for less. Always connected, and always protected with 4G backup in case your internet goes down. Opt-in to Assisted Monitoring via the Ring app and Ring Alarm will automatically call three emergency contacts during an Alarm event. So someone you trust can respond, even if you're on a plane without phone coverage.

Ring Alarms
"Alexa, arm Ring in Away mode."

Works with Alexa

Works with Alexa-enabled devices so you can control your system with your voice. Just say “Alexa, arm Ring in Away mode” when you head out.

What's in the box?

Technical Details

Ring Alarm Contact Sensor (2nd Generation)

Power

2 x CR2032 Lithium Coin Cell 3V batteries

Operating Conditions

Indoor use, 0°C to 49°C

Dimensions

4 cm x 5.3 cm x 1.4 cm

Siren

No

Installation

Mount to door or window frame

Connectivity

Z-Wave (76m range to Base Station open air, line of sight)

Warranty & Service

. If you are a consumer, the limited warranty is in addition to your consumer rights and does not jeopardise these rights in any way. Use of Ring Alarm Kit (2nd Generation) is subject to the terms found .

Support

on the Ring Alarm Kit (2nd Generation) support page.

Looking for specific info?

Customer reviews

4.7 out of 5 stars
1,223 global ratings

Review this product

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Customers say

Customers find the door sensor easy to install and integrate with their existing Ring Alarm system. They appreciate its small size, adhesive strength, and battery life. The sensor detects openings and closings of doors and windows, providing enhanced security for their homes. While some customers find the product a good value for money, others have differing opinions on its overall value.

AI-generated from the text of customer reviews

38 customers mention ‘Ease of installation’38 positive0 negative

Customers find the product easy to install and set up. They say it sticks up easily, connects simple, and works well. The sensors are easy to add to alarms and scan to system.

"It is a perfect fit for my home security system. They were easy to install and work flawlessly on doors and windows...." Read more

"...Wireless connectivity with good signal range Seamless integration with existing Ring Alarm system Slim, unobtrusive design..." Read more

"Easy to install but so hard to get to stick to my shed plastic" Read more

"...I like how they can be installed and have a gap between the magnet part and sensor part, because of the shape of our double glazed windows there is..." Read more

38 customers mention ‘Functionality’38 positive0 negative

Customers like the functionality of the product. They say it works well, is easy to install, and provides enhanced security for their homes. Some find that the devices work while being quite far apart, indicating the size of the device must be suitable.

"...They were easy to install and work flawlessly on doors and windows. The sensors are reliable, with quick alerts every time there’s movement...." Read more

"...They work and I’m happy with the ones I have already...." Read more

"I really like this sensor as it's simple and works perfect." Read more

"This is an excellent product that provides enhanced security for your home...." Read more

11 customers mention ‘Door sensor’11 positive0 negative

Customers like the door sensor. It's a great addition to their Ring home alarm system. The sensors detect the opening and closing of doors and windows, and the notifications are immediate. They are reliable, with quick alerts every time there's movement.

"...The sensors are reliable, with quick alerts every time there’s movement...." Read more

"...Cheaper buy two than separately, handy for any thing that opens and closes, I have the gen 2 alarm kit and slowly adding to the system like camera..." Read more

"...They detect the opening and closing of doors and windows, and the notifications are immediate, giving me peace of mind that my home is always..." Read more

"...massive range of 70 meters on their own, and you can even use a Ring Alarm range extender if you need to aswell to make this even further...." Read more

10 customers mention ‘Fit’10 positive0 negative

Customers find the fit of the product good. They mention it's easy to set up with self-adhesive strips and works well.

"It is a perfect fit for my home security system. They were easy to install and work flawlessly on doors and windows...." Read more

"...Seamless integration with existing Ring Alarm system Slim, unobtrusive design..." Read more

"Straight forward fitting and conection" Read more

"Easy to fit but use screws instead of the adhesive pads, or better still use both. Got a good range of options to fit different door frames" Read more

7 customers mention ‘App responsiveness’7 positive0 negative

Customers appreciate the app's responsiveness. They find the sensors reliable and provide quick alerts when there's movement. The sensors connect quickly and easily to the app, with customisable sounds. It's great to know from the app which doors are open and closed at all times. The sensors provide an extra layer of security and peace of mind.

"...The sensors are reliable, with quick alerts every time there’s movement...." Read more

"...The sensors are responsive and provide that extra layer of security and peace of mind...." Read more

"...and be getting a couple more but this device is a helpful way to monitor snacks cupboard or medical supplies so it logs when open and how long for,..." Read more

"...They connect to the app fast and easy and they have customisable sounds so that you can tell which door or window is open..." Read more

6 customers mention ‘Adhesive strength’6 positive0 negative

Customers appreciate the adhesive strength of the product. They say it sticks well to doors and windows, is easy to connect, and comes with a good quality self-adhesive pad and screw fitting holes.

"...smart and are easy to attach to doors and windows with the built in adhesive strip..." Read more

"...No problems with range. No issues at all really. Self adhesive is powerful and it’s essential to position the sensor precisely first time...." Read more

"...- they do stick well to almost anything though, in my experience." Read more

"Stick up easily and simple to connect" Read more

5 customers mention ‘Battery life’5 positive0 negative

Customers like the battery life of the product. They say it lasts forever.

"...Battery life is excellent, and they integrate smoothly with other Ring devices. Highly recommend for peace of mind!" Read more

"...Battery life seems solid so far, and the setup process through the Ring app was intuitive...." Read more

"...-generation sensors are more reliable, efficient, and have a longer battery life than the previous generation...." Read more

"...The batteries last so long on these its untold. Im very happy with these and will be buying the outdoor version for my shed at some point...." Read more

10 customers mention ‘Value for money’6 positive4 negative

Customers have different views on the value for money. Some find the motion detection good and the product reasonably priced, while others feel it's a bit pricey for what it offers.

"...They work and I’m happy with the ones I have already. Cheaper buy two than separately, handy for any thing that opens and closes, I have the gen 2..." Read more

"...Yes, I’m pleased with these although I feel they are more expensive than I would expect." Read more

"...The value for money is great, and the price is reasonable for the quality of the product...." Read more

"A bit pricey, but does what it has to do." Read more

Great addition to Ring home alarm
5 out of 5 stars
Great addition to Ring home alarm
We bought a Ring home alarm and were so impressed with it that we bought these sensors to put on every door and window in our houseThey're lightweight, look smart and are easy to attach to doors and windows with the built in adhesive stripThey connect to the app fast and easy and they have customisable sounds so that you can tell which door or window is openI like how they can be installed and have a gap between the magnet part and sensor part, because of the shape of our double glazed windows there is at least a 2cm gap when installing themWe have had some of these for over a year now and the app shows that the batteries still have plenty of juice left in them. They use the CR 2032 flat style batteriesWe did have one of the units just randomly die on us recently. So, we called Ring customer service who were very helpful. After completing a few tests on the unit as instructed over the phone, the operator said that the unit was dead and sent us out a new one free of charge. The only let down was that it was 5 days to arrive. Being a security item and an غ brand where you are able to have these delivered same day, I would have expected faster delivery on replacement parts so that my home didn't have to go unprotected so long
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Top reviews from United Kingdom

  • Reviewed in the United Kingdom on 2 October 2024
    It is a perfect fit for my home security system. They were easy to install and work flawlessly on doors and windows. The sensors are reliable, with quick alerts every time there’s movement. Battery life is excellent, and they integrate smoothly with other Ring devices. Highly recommend for peace of mind!
    One person found this helpful
    Report
  • Reviewed in the United Kingdom on 27 December 2024
    I recently added these Ring Alarm Contact Sensors to my existing home security setup, and they've been incredibly straightforward to install. The double-sided tape makes mounting a breeze - no drilling or complicated hardware required. Within minutes, I had the sensors positioned on my doors and windows.

    Key Pros:

    Super easy installation
    Wireless connectivity with good signal range
    Seamless integration with existing Ring Alarm system
    Slim, unobtrusive design
    Important Note: You'll need a Ring Alarm hub to use these sensors, so they're best for people already in the Ring ecosystem or planning to start with their home security system.

    The sensors are responsive and provide that extra layer of security and peace of mind. Battery life seems solid so far, and the setup process through the Ring app was intuitive.

    One minor drawback is the requirement of the Ring hub, which adds to the initial cost if you're not already set up.

    Overall, highly recommended for anyone looking to expand their home security with minimal hassle.

    Would definitely recommend to friends and family looking for an easy security solution.
  • Reviewed in the United Kingdom on 5 December 2024
    Love with the ring ecosystem security & cameras, keeps a record of time & date,. They work and I’m happy with the ones I have already. Cheaper buy two than separately, handy for any thing that opens and closes, I have the gen 2 alarm kit and slowly adding to the system like camera which starts recording if doors open, or window, have motion senses and be getting a couple more but this device is a helpful way to monitor snacks cupboard or medical supplies so it logs when open and how long for, so because of an ex carer I’m upgrading some stuff to same system all on one device as have other devices non ring. Ring dues what i need and I am happy with this buy extra for doors or windows etc,
    2 people found this helpful
    Report
  • Reviewed in the United Kingdom on 29 March 2024
    Easy to install but so hard to get to stick to my shed plastic
    One person found this helpful
    Report
  • Reviewed in the United Kingdom on 25 July 2024
    We bought a Ring home alarm and were so impressed with it that we bought these sensors to put on every door and window in our house

    They're lightweight, look smart and are easy to attach to doors and windows with the built in adhesive strip

    They connect to the app fast and easy and they have customisable sounds so that you can tell which door or window is open

    I like how they can be installed and have a gap between the magnet part and sensor part, because of the shape of our double glazed windows there is at least a 2cm gap when installing them

    We have had some of these for over a year now and the app shows that the batteries still have plenty of juice left in them. They use the CR 2032 flat style batteries

    We did have one of the units just randomly die on us recently. So, we called Ring customer service who were very helpful. After completing a few tests on the unit as instructed over the phone, the operator said that the unit was dead and sent us out a new one free of charge. The only let down was that it was 5 days to arrive. Being a security item and an غ brand where you are able to have these delivered same day, I would have expected faster delivery on replacement parts so that my home didn't have to go unprotected so long
    Customer image
    5.0 out of 5 stars Great addition to Ring home alarm
    Reviewed in the United Kingdom on 25 July 2024
    We bought a Ring home alarm and were so impressed with it that we bought these sensors to put on every door and window in our house

    They're lightweight, look smart and are easy to attach to doors and windows with the built in adhesive strip

    They connect to the app fast and easy and they have customisable sounds so that you can tell which door or window is open

    I like how they can be installed and have a gap between the magnet part and sensor part, because of the shape of our double glazed windows there is at least a 2cm gap when installing them

    We have had some of these for over a year now and the app shows that the batteries still have plenty of juice left in them. They use the CR 2032 flat style batteries

    We did have one of the units just randomly die on us recently. So, we called Ring customer service who were very helpful. After completing a few tests on the unit as instructed over the phone, the operator said that the unit was dead and sent us out a new one free of charge. The only let down was that it was 5 days to arrive. Being a security item and an غ brand where you are able to have these delivered same day, I would have expected faster delivery on replacement parts so that my home didn't have to go unprotected so long
    Images in this review
    Customer image Customer image
    Customer imageCustomer image
    7 people found this helpful
    Report
  • Reviewed in the United Kingdom on 11 December 2024
    I really like this sensor as it's simple and works perfect.
  • Reviewed in the United Kingdom on 30 April 2023
    This is an excellent product that provides enhanced security for your home. I recently added this product to my existing Ring Alarm System, and I am very satisfied with my purchase.

    The installation process was straightforward, and the sensors are compatible with my Ring Alarm system. They detect the opening and closing of doors and windows, and the notifications are immediate, giving me peace of mind that my home is always secure.

    The second-generation sensors are more reliable, efficient, and have a longer battery life than the previous generation. The value for money is great, and the price is reasonable for the quality of the product.

    In conclusion, if you are looking to enhance your home security, I highly recommend this product. It is a must-have product that complements the Ring Alarm system perfectly, giving you peace of mind knowing that your home is protected.
    4 people found this helpful
    Report
  • Reviewed in the United Kingdom on 17 November 2023
    These work well and are easy to link up through WiFi. Physical installation is also easy as they are supplied with a good quality self adhesive pad and screw fitting holes.
    Not so easy to fit neatly to window frames with a bevelled edge. They still work well but are more obtrusive.
    No problems with range. No issues at all really.
    Self adhesive is powerful and it’s essential to position the sensor precisely first time.
    Yes, I’m pleased with these although I feel they are more expensive than I would expect.
    2 people found this helpful
    Report