Last-Minute SavingsLimited quantities.Shop now

Skip to content
Gift Ideas
Main Content

Customer Ratings & Reviews

No content
  • Front. Ring - Alarm Contact Sensor (1st Gen) - White.
  • Alt View 11. Ring - Alarm Contact Sensor (1st Gen) - White.
  • Ring Alarm - Testimonial video 0 minutes 45 seconds
  • Ring Alarm Product Overview video 0 minutes 30 seconds
  • Learn How Ring Security Can Help Protect Your Home video 1 minutes 17 seconds

Ring - Alarm Contact Sensor (1st Gen) - White

Model:
4SD1S7-0EN0
SKU:
6129211
Highly rated by customers for:
Your price for this item is $19.99

Customer reviews

Rating 4.8 out of 5 stars with 1076 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.6 out of 5 stars

  • Quality

    Rating 4.8 out of 5 stars

  • Ease of Use

    Rating 4.8 out of 5 stars

Pros mentioned filter

Cons mentioned filter

98%would recommend to a friend

Customers are saying

Customers express satisfaction with the Alarm Contact Sensor (1st Gen)'s ease of use, installation process, and affordable price point. The sensor's compatibility with the Ring system and its contribution to enhanced security are also well-received. However, some customers have expressed a desire for a smaller size.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 4 Showing 61-80 of 1,076 reviews
  • Pros mentioned:
    Ease of use

    Excellent Sercurity

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I bought these sensors to add to our current system and they worked very well. Was easy to add to our system and worked flawlessly.

    This review is from Ring - Contact Sensor (1st Gen) (6-Pack)

    I would recommend this to a friend
  • Pros mentioned:
    Compatibility, Ease of use

    They do their job

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I got these to add to my Ring Alarm (obviously). They works just as expected. I only wish the thin magnets were standard.

    This review is from Ring - Contact Sensor (1st Gen) (6-Pack)

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Excelente battery life

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    These sensors, art a great addition to your alarm system. The battery life is a pros and They are very easy to use

    This review is from Ring - Alarm Contact Sensor (1st Gen) (2-Pack) - White

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Installation

    Great sensors

    |
    |
    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I like these sensors since they are so easy to install and they operate very well.

    This review is from Ring - Alarm Contact Sensor (1st Gen) (2-Pack) - White

    I would recommend this to a friend
  • Pros mentioned:
    Price

    Great value

    |
    |
    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Priced less than other brands. Do what they're suppose to do had no issues and included lithium batteries last a long time!

    This review is from Ring - Contact Sensor (1st Gen) (6-Pack)

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Security

    Added security

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I needed more sensors for a extra layer of security for all the doors and windows around the house. Easy to set up and install.

    This review is from Ring - Alarm Contact Sensor (1st Gen) (2-Pack) - White

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Love Ring

    |
    |
    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    These were easy to install and work great. Ring has come a long way since they first came out and they keep getting better.

    This review is from Ring - Alarm Contact Sensor (1st Gen) (2-Pack) - White

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Security

    Great addition to Ring security ststem

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Super easy to install and sync to home security system. Adds extra security to all entry points of home whether doors or windows.

    This review is from Ring - Alarm Contact Sensor (1st Gen) (2-Pack) - White

    I would recommend this to a friend
  • Pros mentioned:
    Installation
    Cons mentioned:
    Size

    It works!

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Not much to these sensors. Setup was straight forward. Had to rest one for the system to recognize it, but it was easy to do so.

    This review is from Ring - Alarm Contact Sensor (1st Gen) (2-Pack) - White

    I would recommend this to a friend
  • Pros mentioned:
    Compatibility, Ease of use

    Helps a lot

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Got a pack of these to help with the big alarm system. Added it to additional windows and it works perfectly.

    This review is from Ring - Alarm Contact Sensor (1st Gen) (2-Pack) - White

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use
    Cons mentioned:
    Size

    Quick and Easy

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    These are the easiest sensors I have ever paired to a smart home hub. They are a little bigger than most but the are solid.

    This review is from Ring - Alarm Contact Sensor (1st Gen) (2-Pack) - White

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Price

    Great system!

    |
    |
    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I've had my Ring security and camera system for a few years now and have greatly enjoyed the ease of use, quality of products, and simplified user experience of having all controls in one app on one page.

    This review is from Ring - Alarm Contact Sensor (1st Gen) (2-Pack) - White

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Installation

    Easy to set up around your house.

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very practical and easy to use, specially no wiring needed, and you can add as many as you need around the house.

    This review is from Ring - Contact Sensor (1st Gen) (6-Pack)

    I would recommend this to a friend
  • Pros mentioned:
    Compatibility, Ease of use

    Ribg Sensors 6 Pack

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I paid a good price for the 6 pack of the sensors. They RE EASY TO INSTALL AND WORK WELL WITH THE rING aLARM SYSTEM

    This review is from Ring - Contact Sensor (1st Gen) (6-Pack)

    I would recommend this to a friend
  • Pros mentioned:
    Compatibility, Ease of use

    Easy setup

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Ring alarm system and sensor are super easy to install and setup, detection process super fast, and never fail

    This review is from Ring - Alarm Contact Sensor (1st Gen) (2-Pack) - White

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use

    Easy install!!

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Sensors are easy to install and work very well! Peel and stick and connect with the app and your good to go!

    This review is from Ring - Alarm Contact Sensor (1st Gen) (2-Pack) - White

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Installation

    Easy addons

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    So easy to just keep adding to the ring alarm system. These are easy to install, Ofer multiple install options.

    This review is from Ring - Alarm Contact Sensor (1st Gen) (2-Pack) - White

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use
    Cons mentioned:
    Size

    Easy to use

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Easy to set-up. Wish the sensors were a little smaller, so they would not be as noticeable on our doors.

    This review is from Ring - Contact Sensor (1st Gen) (6-Pack)

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Installation

    Easy as 1 2 3

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very easy to pair with Ring alarm and you can either mount with screws or double sided tape that comes in box.

    This review is from Ring - Alarm Contact Sensor (1st Gen) (2-Pack) - White

    I would recommend this to a friend
  • Pros mentioned:
    Compatibility, Ease of use

    Reliable

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Build with good quality material. Adding to the existing system is very easy. Reliable and works accurately.

    This review is from Ring - Alarm Contact Sensor (1st Gen) (2-Pack) - White

    I would recommend this to a friend
Page 4, Showing 61-80 of 1,076 reviews
Sign in or Create Account

Get the latest deals and more.

Best Buy appLearn more
Share on YouTubeShare on InstagramShare on TikTokShare on FacebookShare on PinterestShare on X
Best Buy Canada
AccessibilityTerms & ConditionsPrivacyInterest-Based AdsState Privacy RightsHealth Data PrivacyDo Not Sell/Share My Personal InformationLimit Use of My Sensitive Personal InformationTargeted Advertising Opt OutCA Supply Chain Transparency Act
In-store pricing may vary. Prices and offers are subject to change. © 2025 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.