Ring Alarm Contact Sensor - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design Fits Any Frame | Easy Installation | Base Station Required

These Ring Alarm Contact Sensors (2nd Gen) in the 2-pack are a must-have add-on for any Ring Alarm system. Super easy to install and provide instant alerts when doors or windows open—perfect for securing entry points. Pros: • Ultra-simple DIY install — Peel-and-stick mounting (or screws if preferred), no tools needed; pairs quickly with the Ring app in minutes. • Slim, discreet design — Much smaller than 1st gen, fits nicely on any frame without looking bulky. • Long battery life — Up to 3 years on included CR2032 batteries; reliable performance with minimal maintenance. • Instant, accurate alerts — Works flawlessly with Ring base station for real-time notifications (subscription required for full features). • Great value — Affordable pack expands coverage easily; high ratings (4.7+ on Amazon from thousands) prove reliability. Cons: • Requires Ring Alarm base station — Not standalone; needs the system to function. • Gap tolerance improved but check alignment — Handles up to ~1 inch separation reliably, but occasional false alarms if not mounted perfectly (rare). • Subscription for advanced features — Basic alerts work, but recording/history needs Ring Protect plan. If you’re building out your Ring Alarm setup for home security, this 2-pack is spot-on—reliable, affordable, and integrates seamlessly. Highly recommended—solid 5 stars!

works to bring my old system to better technology. Easy to install and compatible with the ring generation 1. App communication is flawless, I purchased 8 sensors and all worked well out of the box.

Great

Easy to set up and connect to our existing Ring home station. Got these for our downstairs crank windows and the sensors work perfectly

These sensors are very sensitive and work exactly as I need them to. I feel much safer now that I have these sensors installed on every door and window. They give me peace of mind knowing I’ll be alerted if anything is opened.

Once they work, they are good. Installing them and pairing to the base station was problematic because the response is exceptionally sensitive to the position of the magnet on doors and door frames. They had to be reset and repaired several times near the base station. These sensors also dont have the same response distance as the previous sensors we had, and I did need to purchase a range extender. Since installing, only one has gone offline but did reconnect on its own.

Works like they should. Only issue I had is i needed 3 and Amazon wouldn't let me order a single one so I had to have someone else order me a single one. I couldn't even double my order and got 4

I did not know that you could replace the batteries in these thanks. When my other one went out, I thought it was garbage. When I took it down and saw the back door on the motion detector I replaced-the batteries and it worked great.

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.

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!

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.

This product is awesome, it does exactly what I need it to do! It gives me the comfort I need to sleep soundly at night. It was easy to install, the instructions are very simple to understand and it was easy to connect to my phone. Ill always know when my doors get opened amd it's a great feeling!

It was added to my Ring system without an issue. Ring customer support is great, too, when I need technical help.