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 41 Showing 801-820 of 1,076 reviews

  • This is part of a good alarm system

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

    These are contact sensors and they work fine when added to the ring alarm system, which, by the way, I am very pleased with.

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

    I would recommend this to a friend

  • Working great

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

    Contacts are working great and have no issues with them. Would highly recommend for your in home security system.

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

    I would recommend this to a friend

  • Easy to use.

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

    Helps me sleep at night knowing that all my children's Windows have alarms on them very thankful for this product.

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

    I would recommend this to a friend

  • Good alarm

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

    I have these on windows, in a bedroom, in the basement. I can hear them open in the base station up stairs.

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

    I would recommend this to a friend

  • Great product for those that work.

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

    Of the four pieces that were bought one did not work. I tried to contact the store in Florida City, Florida, but was placed on hold for 45 minutes. I plan to travel to the store to exchange this one product.

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

    I would recommend this to a friend

  • Great for diy

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

    These work really well for the people who don’t want to pay the big alarm company’s $30-$40 a month!

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

    I would recommend this to a friend

  • Great!

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

    I initially bought the kit but I have a lot of windows and doors and these work on both. Working just fine.

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

    I would recommend this to a friend

  • Easy to install.

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

    I like having the option of selecting location while having the ability to move one or more without special tools.

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

    I would recommend this to a friend

  • Additional Contact sensors needed for Ring system.

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

    I needed to purchase additional contact sensors for the Ring alarm and fire system. It works very well.

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

    I would recommend this to a friend

  • Always best to buy the largest pack available just

    |
    |
    Posted . Owned for 11 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Always best to buy the largest pack available just in case one stopped working

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

    I would recommend this to a friend

  • Buy in bulk

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

    It was nice to get a 6 pack of sensors but it would have been nice to not have to buy 6 additional sensors after paying so much for the starter pack. I wish they would include more sensors in the initial basic starter pack.

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

    I would recommend this to a friend

  • Add on option for Ring security

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

    Nice to have additional sensors to cover all points of entry an intruder may try to use for home entry.

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

    I would recommend this to a friend

  • They get the job done

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

    Got these to use on other doors with our Ring alarm system. They do what they are supposed to do.

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

    I would recommend this to a friend

  • Senors

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

    I have purchased several and they work great...just keep batteries in stock to replace as needed.

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

    I would recommend this to a friend

  • Great price for sensors to complement my Ring

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

    I installed a Ring security system and needed extra sensors. Great price, all sensors worked flawlessly.

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

    I would recommend this to a friend

  • WORKED AS ADVERTISED

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

    Got in on sale and great deal for a two-pack. Pairs easily with ring alarm, and now, alexa can even arm the system!

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

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

    Easy set-up

    |
    |
    Posted . Owned for 11 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Got along with the full system works good but we noticed one widow constantly shuts off. But other than that great product with easy installation.

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

    I would recommend this to a friend

  • Oldie but a goodie

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

    I went with these and not the new 2nd version due to the size. These fit nice in tight areas

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

    I would recommend this to a friend

  • Easy to install and set up with Ring Alarm System

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

    I’ll never go with another Security Company. Ring makes using their products simple and effective.

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

    I would recommend this to a friend

  • Work great!

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

    Completely integrates with the security system and sounds when someone enters the door. Alerts your phone too.

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

    I would recommend this to a friend
Page 41, Showing 801-820 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.