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  • Front. Ring - Alarm Contact Sensor (2nd Gen) (1-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) (1-Pack) - White.
  • Alt View 13. Ring - Alarm Contact Sensor (2nd Gen) (1-Pack) - White.
  • Alt View 14. Ring - Alarm Contact Sensor (2nd Gen) (1-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) (1-Pack) - White

Model:
4SD1SZ-0EN0
SKU:
6403955
Highly rated by customers for:
Last Minute Deal
Your price for this item is $10.99
The comparable value price is $19.99

Customer reviews

Rating 4.8 out of 5 stars with 1236 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 31 Showing 601-620 of 1,236 reviews

  • Ring

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    Posted . Owned for 7 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great item to get for your house to be safe and add to other points in the house

    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 product

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

    Great product! Accurate notifications. Easy to install.

    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

    I like ring

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

    Theres other alarm system but ring I think is the best. The app and setup is easy.

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

    I would recommend this to a friend

  • Why anything else?!

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

    AWSOME Product period! If your using any other Alarm set up, your CRAZY! Ring has changed the game!

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

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

    love that you can add to ring

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

    Just another example of why I choose Ring. Easy to add more sensors to your package as you need them.

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

    Liking Gen 2 sensors

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    Posted . Owned for 7 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I like gen 2 of the sensors compared to gen 1. The set up felt a bit easier

    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

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

    Already had the security system but was short of 2. Bought it and worked as smoothly as the others.

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

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

    Great product

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

    Great product. Didn't have any issue installing it. Would definitely purchase again.

    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.

    This sensors work great! Easy to install and pretty much anywhere you have a window or door.

    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

    All ring products are spectacular

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

    These alarm contact sensors bring ease of use and further enhance the fully digital ring alarm system.

    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

    Just what I needed

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

    Great replacement for my sensors that died. They work as advertised and set up was super easy

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

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

    Love the Ring system!

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

    I have the Ring 2 system, and I love it! These contact sensors are easy to connect and easy to install.

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

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

    Perfect for additional windows and doors

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

    I love this product because I have 15 windows in my home and they work perfect with my ring system

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

    I would recommend this to a friend

  • Ring sensor

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

    Just love the ring had to add another sensor to my house to feel more protected

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

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

    Easy to install

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

    We have both the 1st and 2nd Gen sensors in our house (bought at different times) and both were pretty straightforward and easy to install on our windows and doors. Syncing these to the Ring app was also easy to do.

    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 sensor.

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

    Must have for the Ring system. Easy to install!!!!

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

    I would recommend this to a friend

  • Great product

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

    These are great sensors at a reasonable price. I like that this generation takes cr2032 batteries also.

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

    Sure way add on

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

    Great system. Super easy to install. Just peel and stick. Done in 5 minutes

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

    No, I would not recommend this to a friend

  • Worth the price

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    Posted . Owned for 7 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love my security system. I have lots of windows and this was cheep and easy to put on.

    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 well

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

    Little costly but easy to add to existing ring system. Otherwise no complaints

    I would recommend this to a friend
Page 31, Showing 601-620 of 1,236 reviews
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