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Certified Refurbished Ring Alarm Contact Sensor (2nd Gen) – 2-pack

  • Based on 1,967 reviews
Condition: New
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Eligible for Return, Refund or Replacement within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, May 22
Order within 18 hours and 10 minutes
Available payment plans shown during checkout

Configuration: 2-Pack Contact Sensor


Features

  • A Certified Refurbished Ring Alarm Contact Sensor is refurbished, tested, and certified to look and work like new and comes with the same limited warranty as a new device.
  • Get instant mobile alerts when doors and windows open in your home
  • Now smaller to enable increased placement options
  • Easy installation with no tools required
  • Mounts to door and window frames
  • Includes two 3V CR2032 batteries
  • Requires the Ring Alarm Base Station

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, May 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Like new! Great discounted price!
Configuration: 2-Pack Contact Sensor
I purchased these as additional sensors for my new place. They arrived in a Ring box sealed; very similar to a new box purchase. The sensors came in an original Ring box with adhesives pre-applied. If the listing did not indicate Certified Refurbished I would not have known these were. The sensor was easy and quick to add to my existing alarm system. No issues at all! ... show more
Reviewed in the United States on March 28, 2024 by Francis V

  • Work just like brand new. And cheaper than Ring without any shipping charges !
Configuration: 2-Pack Contact Sensor
I didn't realize that Amazon sold Ring products but will purchase them here from now on. They are cheaper than buying them from Ring even with my 10% subscriber discount and NO shipping charges. They work like brand, new, too ! Thanks, Amazon !
Reviewed in the United States on April 12, 2024 by TheVermontStooge

  • Great for my mother
Configuration: 2-Pack Contact Sensor
My father passed away recently and my mom is now living alone about 2 hours away. She was having trouble sleeping because of being alone and worried about someone breaking into the house. She wanted something simple and this was it. It took some time pairing and setting up all of the door and window sensors but once I got the hang of it the process was simple. I now can monitor from my phone if an alarm is triggered and if it was an accident I can help her shut it off using my phone. This was the case in the beginning but now she has the hang of it. It has given her peace of mind and now I am considering getting a system for my home as well. It would make a great addition to my current system which is just a hammer under the mattress. Definitely recommend ... show more
Reviewed in the United States on April 26, 2024 by Jenni

  • Work Great!!
Configuration: 2-Pack Contact Sensor
Refurbished or not, these work as well as the new ones I installed a few years back. Due to my configuration the sensors do not line up perfectly and this ended up being my issue with the original sensors over time. I could take the sensors off of the door, line them up really close together (1/16th inch) and they would work fine, but otherwise it was a no go. I am assuming over time these start to lose their effectiveness @ any range. Either way, I was having the same problem on two different doors and these refurbished sensors fixed the issue perfectly. Guessing due to my configuration I will have to figure something else out, or replace these every two years or so. As far as installation, just go into settings and remove the old sensor and follow the instructions on the app to add the new one. ... show more
Reviewed in the United States on March 19, 2024 by CS CS

  • Great with a few caveats
Configuration: 2-Pack Contact Sensor
These sensors have been the most reliable contact sensors I’ve used (not with Ring, but with Home Assistant). Highly recommended. A few other reviewers have mentioned the main issue: the sensor can easily fall out of its mount. I use double sided tape to hold them in place. Another caveat for Home Assistant users is that I cannot get Nabu Casa to share this with Google Home. ... show more
Reviewed in the United States on March 31, 2024 by J s

  • Reliable Home Security Enhancement
Configuration: 2-Pack Contact Sensor
The Certified Refurbished Ring Alarm Contact Sensor (2nd Gen) is a cost-effective and reliable solution for enhancing the security of your home. This 2-pack of refurbished sensors provides you with peace of mind at a fraction of the cost of new ones. With the Ring Alarm Contact Sensor, you can easily monitor the opening and closing of doors, windows, cabinets, and any other entry points in your home. This sensor is designed to detect when a contact is broken, triggering an alert to your Ring Alarm Base Station. In the event of a potential break-in or unauthorized entry, you will be immediately notified through the Ring app, allowing you to take appropriate action. Being certified refurbished, these sensors have undergone a thorough inspection and testing process to ensure they meet high-quality standards. While they may show some signs of previous use, they are restored to full functionality and come with a warranty for added peace of mind. The installation process for these contact sensors is simple and hassle-free. They can be easily mounted using the provided adhesive or screws, depending on your preference and the surface you're attaching them to. The sensors are compact and discreet, blending seamlessly into the aesthetics of your home. One of the advantages of the Ring Alarm ecosystem is its compatibility with other Ring devices. These contact sensors seamlessly integrate with the Ring Alarm system and can be easily controlled and monitored through the Ring app. This allows you to have a centralized hub for all your home security needs, giving you full control and visibility over your home's security status. The battery life of the Certified Refurbished Ring Alarm Contact Sensor is impressive, offering long-lasting performance. The sensors are powered by a replaceable coin cell battery, which ensures that you won't have to constantly worry about recharging or replacing batteries. Overall, the Certified Refurbished Ring Alarm Contact Sensor (2nd Gen) - 2-pack is an excellent option for anyone looking to enhance the security of their home while being mindful of their budget. With reliable detection, easy installation, compatibility with the Ring Alarm system, and long battery life, these refurbished sensors provide a cost-effective solution for safeguarding your home. Overall rating: ⭐⭐⭐⭐ ... show more
Reviewed in the United States on July 22, 2023 by Christopher Stockton

  • 1 of 2 was defective, but Ring replaced it without a hassle
Configuration: 2-Pack Contact Sensor
I installed these on windows just days before going on a two week vacation. I started receiving low battery alerts from one of the sensors just a day or two into my vacation, and the battery died within a couple days of the first alert. I figured the sensor just had bad batteries and replaced them when I arrived home. I don't think more than a few days went by before I again received low battery alerts from this same sensor. I did not want to remove the other sensor and thought Amazon would require I do so since these were a two-pack. I decided to call Ring instead, and customer service was great. I just needed to provide the SN on the sensor and customer service sent me a replacement. Ring wanted the defective sensor and emailed me a prepaid UPS shipping label. It does not get much more simple than that. Yes, I was out a couple batteries the sensor drained, but I had purchased a multi-pack and had plenty. ... show more
Reviewed in the United States on September 7, 2023 by Owner

  • Perfect
Configuration: 2-Pack Contact Sensor
It is a near perfection product as a new buy. This does not look like its refurbished, works perfectly!
Reviewed in the United States on April 9, 2024 by pruthvi gandhi

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