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

Model:
4SD2SZ-0EN0
SKU:
6403968
Your price for this item is $39.99

Customer reviews

Rating 4.8 out of 5 stars with 1301 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 14 Showing 261-280 of 1,301 reviews
  • Pros mentioned:
    Ease of use

    Worked as expected

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

    I purchased these to add to Smartthings, it takes a little extra work and the Smartthings IDE but they are working flawlessly. Nice to have a bit of extra protection knowing when certain doors are opened.

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

    Excellent

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

    These work really well. Easy to install and set up.

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

    Better system than arlo.

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

    Ring is as good as any smart home security alarm out there. Easy to install and it comes with tools and accessories you needed to install it. It’s better if you have smart phone for easy install and programming.

    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

    BEST ALARM PURCHASE EVER

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

    Easy to install and set up! Love being able to protect my home at a reasonable cost! Definitely will recommend to everyone, better than spending thousands on a complex system same benefits.

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

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

    Easy to use

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

    Easy to install; work great; good price to add more.

    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
    Cons mentioned:
    Connection

    Good product

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

    These are easy to install and program/use it do experience some connectivity issues. Telephone support could use some improvement.

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

    Ring

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

    The ring product works very well & is great for home systems.

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

    Easy Install

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

    After having the Ring security system set up im my house, I realized that I didn't cover one of my doors. I ordered this sensor from Best Buy and decided to do it myself. The install was very simple. I got it early and I was pleased.

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

    Ring Alarm Sensors

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

    So far all 15 sensors are working great. I forgot that we placed one in a new location where I never had one with ADT. When I opened the door I hadn't turned the alarm off and suddenly I see Ring Alarm on my phone. So they are working.

    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

    Works as Advertised!

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

    These were easy to install and add to the Ring App. They work just as advertised and you can’t ask for more than that.

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

    Ring Sensors

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

    Works great. Slimmer than the original Gen 1’s. Going to replace all with these.

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

    Easy to install.

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

    Easy to add to the system and setup, we use them for doors and windows.

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

    Great buy

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

    The sensor is a great addition to my Ring Alarm System. It works without any issues and was easy to setup. I will buy more in the future.

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

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

    Great

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

    Works very well with my existing ring system. Backwards compatible with gen 1.

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

    Works Great

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

    Purchased this sensor to add on to my existing Gen. 1 Ring System. Works as expected, easy to set up with the Ring App. The Gen. 2 sensors are a little bit larger than the Gen. 1, but barely (wasn’t an issue). Very happy with the performance of the Ring Security System.

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

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

    Must gave

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

    I think the Ring system is awesome. It’s b very easy to install and setup and the professional monitoring is top notch v

    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

    Ring sensors.

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

    Recommend installing each sensor one at a time while having your ring app on your phone updating and labeling each sensor.

    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

    Fair price, good value

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

    Works well, no complaints. Easy to set up and put in place. Great to consider for additional home monitoring.

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

    Ring sensors

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

    This purchase is in addition to the previous Ring security alarm system I purchased from Best Buy. Easy to install and are excellent.

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

    DR.

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    Posted . Owned for 8 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Easy to install and effective in what it does! Best Buy sent the Ring sensor quickly and well packaged! Excellent!

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

    I would recommend this to a friend
Page 14, Showing 261-280 of 1,301 reviews
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