





🔒 Stay one step ahead with sleek, smart security that never sleeps.
The Ring Alarm Contact Sensor 2nd Gen offers instant mobile alerts for doors and windows with a slim, easy-to-install design. Powered by long-lasting CR2032 batteries, it delivers up to 3 years of maintenance-free security. Utilizing Z-Wave technology, it connects seamlessly to your Ring Alarm Base Station with a 250-foot range, ensuring reliable, real-time protection for your home.
| Power | CR2032 coin cell batteries |
| Battery life | Approximately 3 years |
| Max distance between sensors | 1 inch. Leave ½” space on non-magnet side to access battery compartment |
| Operating conditions | Indoor use, 32°F to 120°F (0°C to 49°C) |
| Dimensions | 1.56 in x 2.09 in x 0.55 in |
| Installation | Mounts to doors and windows, Ring Alarm Kit required |
| Connectivity | Z-Wave (250-foot range to Base Station open air, line of sight) |
| Warranty and service | 1-year limited warranty and service included. Use of Ring Alarm Kit is subject to the terms found here. License information can be found here. |
| Support | Click here to view more information on the Ring Alarm Kit support page. For monitoring licenses, visit ring.com/licenses. |
S**L
⭐️⭐️⭐️⭐️⭐️ Excellent Upgrade with Extra Tamper Protection!
The Ring Alarm Contact Sensor 2‑Pack is a fantastic addition to my home security setup. Installation was quick and easy, and the sensors work flawlessly with my Ring system. What really impressed me with this new version are the battery protectors — they’re an awesome improvement that add an extra layer of tamper protection. It gives me peace of mind knowing that the sensors are not only reliable but also harder to interfere with. The design is sleek, compact, and blends in well with doors and windows. Notifications are instant, and the sensors have been rock‑solid since I installed them. Ring clearly listened to customer feedback and made meaningful upgrades. Highly recommend this 2‑pack for anyone looking to strengthen their home security!
S**O
Great Ring contact sensors
These sensors work perfectly and connect instantly with the Ring system. Very reliable, good battery life, and easy to install. A great choice for securing doors and windows.
K**E
Great buy!
As always Ring never disappoints. The setup for these only took about five minutes. The Ring app makes things especially uncomplicated and easy to use. It comes with everything you need including tape so you can place it securely on your doors. I have had these in a previous house and they have never fallen off. I was able to order a two-pack which was great and saved money. I’m not normally good with technology, but these were so easy to do and work so well with your other ring accessories.
J**.
Easy to Set Up and Works Great!
I picked up the Ring Alarm Contact Sensor for one of my entry doors and was really impressed with how easy the whole process was. Setup was super simple, basically just pulled it out of the box, followed the app instructions, and it connected without any issues. What I really liked is that it already had adhesive tape applied, so I didn’t even need to dig out tools or screws. I just peeled the backing off and stuck it directly to the door and frame. Took maybe two minutes total. It’s been working perfectly since, alerting me right away whenever the door opens. It’s a solid little sensor and blends in nicely without being too noticeable.
B**N
Good keypad
Just as advertised. Easy setup and use.
H**H
Little sensor that works
Contact sensors for ring alarm system are well designed and compact. They works as intended and you get notified through your phone via ring app. Setting them up is very easy and straightforward. Just follow the instructions on ring app and it takes about 10 mins for adding each sensor. I take off one star because of the price. If you did not find a real good deal, these little thing can cost you almost $20 a piece.
D**H
Works great
The contact sensor works like it should. I have had no problems with them and feel safe knowing I have protection.
S**G
Ring Alarm Contact Sensor with SmartThings Hub v2
Ring Alarm Contact Sensor works perfectly with SmartThings Hub v2. Very easy to setup. Add device by scan QR Code, remove small piece of plastic to activate battery, press button for 5 seconds. when you release the button, it flash really quick during pairing with SmartThings Hub. it should show up as Z-Wave device when is done.
A**R
The Ring Alarm Contact Sensor 2-pack (2nd Gen) is a fantastic addition to my home security setup. Installation was a breeze, and they work seamlessly with the Ring Alarm system. They are compact and responsive, alerting me immediately when doors or windows are opened. Pros: Easy Installation: Simple setup with no tools required. Seamless Integration: Works perfectly with the Ring Alarm system for instant alerts. Con: Requires Ring System: Only compatible with the Ring Alarm, so it’s limited if you don’t have that setup. Highly recommend for anyone using Ring Alarm to boost their home security!
M**Z
I purchased these sensors to add to my security system. Super easy to connect to base station and configure. A bit challenging to mount on an inswing recessed door. I ended up chiseling a small hole in the door jamb to insert the magnet and mounted the sensor portion to the door. For installation on windows, I was able to mount the 2 pieces and right angles to each other and still have reliable pickup/dropout of the contact.
'**K
I’ve got these Ring contact sensors on all my accessible windows, and they’ve been awesome overall. Installation was super easy—just stick them on and connect through the app. The batteries last a long time (I usually get over a year before needing to swap them), and replacing the battery when it’s time is quick and painless. The app is also loaded with options, and I really appreciate the tamper detection—it gives me peace of mind knowing I’ll get an alert if someone tries to mess with the sensors. Out of all the ones I have installed, I only had one that went “bad” and started burning through batteries every few days. I reached out to Ring support, and they replaced it right away with zero hassle, which was impressive. My only minor gripe is that the adhesive on the bottom isn’t the strongest—I’d recommend using stronger double-sided tape or screws if you want it to stay put long-term. Overall, though, these sensors work exactly as advertised and fit seamlessly into the Ring system. TL;DR: Easy install, battery lasts over a year, simple battery replacement, lots of app features, and tamper detection. Had one defective unit but support swapped it instantly. Only downside is weak adhesive. Still a great addition to any Ring setup.
A**R
I had new Windows installed and was using previous wired contacts with my ring alarm. Needed to install new ring wireless contacts and they work perfectly. Very easy to set-up but I do wish there was a smaller version available.
Z**I
Stopped working. It’s completely unresponsive. Can’t even do a factory reset. Update: they replaced my defective alarm. Now it works.
Trustpilot
3 weeks ago
2 months ago