Ring Alarm Contact Sensor 2-Pack - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design | Easy Installation | Base Station Required
Condition: New
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- – 4-month term
- – No impact on credit
- – Instant approval decision
- – Secure and straightforward checkout
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Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
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30-day returns
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30-day refund/replacement
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Aug 20 – Aug 21
Recently Viewed
Style: 2-Pack Contact Sensor
Features
- Get instant mobile alerts when doors and windows open in your home with a Ring Protect subscription (sold separately).
- 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:
Aug 20 – Aug 21
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
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Top Amazon Reviews
Style: 1-Pack Contact Sensor
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.
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Reviewed in the United States on July 20, 2025 by Jesus L. Jesus L.
Style: 1-Pack Contact Sensor
We have the ring security alarm and purchased additional sensors. These are very easy to install and are very durable, they have lasted us many years. You only have to replace the battery when running low. The sound quality is good and very easy to connect. They’re functional and can be used on doors or windows. The sensitivity is perfect if installed correctly. Highly recommend for the ring security system
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Reviewed in the United States on July 29, 2025 by Lannette Lannette
Style: 1-Pack Contact Sensor
Long time Ring customer with not only the cameras but alarm system and monitoring throughout the house. The door sensors are great! Very easy to install and connects quickly with the QR code. Build in adhesive holds well to the door. Total install was about 2-minutes and rarely have to change batteries. Great addition to the system and highly recommend.
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Reviewed in the United States on August 9, 2025 by Justin
Style: 1-Pack Contact Sensor
The Ring Alarm Contact Sensor (2nd Gen) is an excellent addition to my home security setup! Installation was a breeze—I simply attached the sensors to my doors and windows, and they immediately synced with my Ring Alarm system. The setup process was simple, and the app made it incredibly easy to monitor and control. What I really love about these sensors is how responsive they are. I get instant notifications on my phone if a door or window is opened, which is exactly what I need to stay alert when I'm not home. The sensors are small, discreet, and blend in well with my home’s decor without drawing too much attention. The battery life has been great so far, and I appreciate that they’re designed to last. I also feel more secure knowing I can integrate the sensors with my entire Ring system, giving me full control over my home’s security. Whether I’m inside or away from home, I always know when the system is triggered. If you're looking for an easy-to-use, effective contact sensor for your Ring system, I highly recommend the Ring Alarm Contact Sensor (2nd Gen). It’s a great way to enhance your home security.
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Reviewed in the United States on January 7, 2025 by Jh
Style: 2-Pack Contact Sensor
It was a breeze to set these up with my ring system. Everything works perfectly
Reviewed in the United States on July 24, 2025 by Josh M
Style: 6-Pack Contact Sensor
The Ring Alarm Sensor (2nd Gen) is really easy to install . This size is perfect and look stylish. The sensor detects people fast and give notification through sound. I purchased several more for all doors and windows . Added to Ring App security system seamlessly.Works well safe guarding every entry point. Great product at a good price! Highly recommended.
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Reviewed in the United States on July 12, 2024 by Sunny
Style: 1-Pack Contact Sensor
Easy to install, fairly priced and perfect replacement.
Reviewed in the United States on July 26, 2025 by Michele B
Style: 2-Pack Contact Sensor
Added to system with no issues.
Reviewed in the United States on July 22, 2025 by Joe Marsh