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  • Front. Ring - Alarm Contact Sensor (2nd Gen) (2-Pack) - White.
  • Ring Home: See more. Know more. Protect more. Subscribe to Ring Home to supercharge your Ring experience with our most advanced video, intelligence, and security features. Choose a plan that's right for you. Recommended: * Basic: Get the basics with video event playback and smart notifications for one home camera. * Standard: The ideal Ring experience with enhanced features and helpful automations for all your home devices in one location. * Premium: Get the most advanced features for your home devices in one location. Additional options: * 180 Days Video Event History: $4.99/month * Person and Package Alerts: $49.99/month * Video Preview Alerts: $9.99/month * 0% Financing on select Ring.com purchases: $99.99/month * Alarm Professional Monitoring: $19.99/month (add-on to Standard or Premium plans) * Smart Video Search Beta: $19.99/month (add-on to Premium plan) * 24/7 Recording: $19.99/month (add-on to Standard or Premium plans) * SOS Emergency Response: $19.99/month (add-on to Premium plan)
  • Alt View 11. Ring - Alarm Contact Sensor (2nd Gen) (2-Pack) - White.
  • Alt View 12. Ring - Alarm Contact Sensor (2nd Gen) (2-Pack) - White.
  • Alt View 13. Ring - Alarm Contact Sensor (2nd Gen) (2-Pack) - White.
  • Alt View 14. Ring - Alarm Contact Sensor (2nd Gen) (2-Pack) - White.
  • Ring Home: See more. Know more. Protect more. Subscribe to Ring Home to supercharge your Ring experience with our most advanced video, intelligence, and security features. Choose a plan that's right for you. Recommended: * Basic: Get the basics with video event playback and smart notifications for one home camera. * Standard: The ideal Ring experience with enhanced features and helpful automations for your home devices in one location. * Premium: Get the most advanced features for your home devices in one location. Additional options: * Alarm Professional Monitoring for +$10: Includes everything Standard, plus 24/7 recording, SOS Emergency Response, and more. * Alarm Professional Monitoring for +$10: Includes everything Premium, plus Alarm Professional Monitoring for +$10.
  • Ring Alarm Products video 2 minutes 16 seconds
  • Ring Smart Lighting video 1 minutes 00 seconds

Ring - Alarm Contact Sensor (2nd Gen) (2-Pack) - White

Model:
4SD2SZ-0EN0
SKU:
6403968
Highly rated by customers for:
Your price for this item is $15.99
The comparable value price is $39.99

Customer reviews

Rating 4.8 out of 5 stars with 1233 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.7 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

97%would recommend to a friend

Customers are saying

Customers regard the Alarm Contact Sensor (2nd Gen) (2-Pack) highly for its ease of use and straightforward installation. The sensor's compact size and reasonable price are also well-received, along with its compatibility with the Ring system. However, some customers have reported issues with connection stability and range limitations.

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 10 Showing 181-200 of 1,233 reviews
  • Pros mentioned:
    Ease of use

    Easy addition to security

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

    Easy to install and added security quickly. Stays secure

    This review is from Ring - Alarm Contact Sensor (2nd Gen) (6-Pack) - White

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

    Sendors

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

    Easy to set up the sensors work well and we feel safer having them...excellent product

    This review is from Ring - Alarm Contact Sensor (2nd Gen) (6-Pack) - White

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

    Ring contact sensors

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

    The ring contact sensors are by far one of the best additions to my ring security systems. The base station allows up to 100 wireless sensors and divices, so I can keep adding them if I need too.

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

    Quality and ease of use

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

    I live in a townhouse and needed extra sensors for the windows on the first floor. I thought it would be difficult as the ring system i bought had 6 sensors preprogrammed for setup. Just scanned the barcodes on these ....and voila! This review is for second generation sensors

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

    Just want I needed

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    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I needed this to get statuses of my patio doors and use them with Hubitat....exactly what I needed and perfect for my application. They are little on the big side compared to others, but dont mind it. Easy to install and sync.

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

    Ease of use

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

    Very easy to set up and install. 6- pack saves you money over buying them individually.

    This review is from Ring - Alarm Contact Sensor (2nd Gen) (6-Pack) - White

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

    Easy set up

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    Posted . Owned for 9 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Easy to connect to system and works as advertised for months

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

    Easy to install

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

    Easy to install does what it is designed to do. Nice sleek modern design, easy on the eyes!

    This review is from Ring - Alarm Contact Sensor (2nd Gen) (6-Pack) - White

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

    Home alarm

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

    Much smaller than old contacts. Easy to install. What more could you ask

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

    I would recommend this to a friend
  • Cons mentioned:
    Range

    Big improvement over the 1st gen

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

    The updated design fits our doors better, looks better and seems to work better overall. The only negative is the range doesn't seem to be as high as the first gen

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

    Peace of mind protection

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

    Ring quality and ease, all windows and door protection at a low price

    This review is from Ring - Alarm Contact Sensor (2nd Gen) (6-Pack) - White

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

    Excellent Add-on to Ring Alarm System

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

    Added to existing Ring Alarm system. Worked great.

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

    "Bloop, bloop"!

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

    Bought these little gadgets to finish my total home security package. Cant be more happier... easy to install and upload to the app. I like to here the little " bloop,bloop" every time the doors or windows open, lets me know we are a little more safe in this unsure world!

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

    So easy to install

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

    These contact sensors are so easy to install and it integrates well with other ring devices.

    This review is from Ring - Alarm Contact Sensor (2nd Gen) (6-Pack) - White

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

    Great invention

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

    Easy to install and link in. Reasonably priced. Looks good

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

    Very Easy Setup

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

    Works very well and was an easy addition to my Ring Home Security system. Set up was super easy with the app.

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

    Good buy

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

    Easy add to home security system, easy install and great price.

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

    Good Buy

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

    These sensors are compatible with the 1st generation device. Easy to install as well.

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

    Great Procuct

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

    great product. easy to install, works great. no problems

    This review is from Ring - Alarm Contact Sensor (2nd Gen) (6-Pack) - White

    I would recommend this to a friend

  • Ring

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

    Best security product out there couldn't be more happy no issues

    This review is from Ring - Alarm Contact Sensor (2nd Gen) (6-Pack) - White

    I would recommend this to a friend
Page 10, Showing 181-200 of 1,233 reviews
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