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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
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Customer reviews

Rating 4.8 out of 5 stars with 1320 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

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 40 Showing 781-800 of 1,320 reviews

  • Great for windows and doors

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

    Great for windows and doors when adding it to the ring security system, easy to install

    I would recommend this to a friend

  • Great

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Bought them as addition to a set that I bought and work great! My house feels secure!

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

    I would recommend this to a friend

  • WORKS GREAT

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

    EASY TO INSTALL, EASY TO SET UP AND EASY TO USE. PRICE IS PAR.

    I would recommend this to a friend

  • Ring door sensor

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

    great quality for the price. product works well and glad I made the purchase.

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

    I would recommend this to a friend

  • Sensor

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

    AAAAAA+++++++ Excellent product and good quality E

    I would recommend this to a friend

  • Its great.........................................

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

    Its great............................................................

    I would recommend this to a friend

  • Its great.........................................

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

    Its great............................................................

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

    I would recommend this to a friend

  • great

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

    love these sensors. they work great with an integrated ring system! awesome product

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

    I would recommend this to a friend

  • Great new design!

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

    Works well with older system and new design makes it easy to put on any doors or windows.

    I would recommend this to a friend

  • Sensor

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

    Great add on for my ring security alarm. I like the small profile for my doors

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

    I would recommend this to a friend

  • Ring has been the best home improvement we’ve made

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

    New improved and smaller than the original version. Still easy to install and connect

    I would recommend this to a friend

  • Great item

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

    Very easy it install and conect to the base. Tamper proof too!

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

    I would recommend this to a friend

  • excellent security for small business

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

    exactly what we needed for our building at an affordable price

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

    I would recommend this to a friend

  • Good

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

    Love the ring at as t e m good value. Use it all the time.

    I would recommend this to a friend

  • Great addition

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

    I needed this to use with my existing ring alarm. Seems to work great, easy to set up.

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

    I would recommend this to a friend

  • Great system!

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

    Easy installation. Total DIY! App is also very easy to use. Highly recomend.

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

    I would recommend this to a friend

  • 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.

    Works as intended to protect entry or exits inside your home.

    I would recommend this to a friend

  • Easy installation

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

    Very nice product and easy to integrate with 1st gen ring base station

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

    I would recommend this to a friend

  • Great product

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

    I have had these sensors for years. Never had a problem ever.

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

    I would recommend this to a friend

  • Ring Sensor

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

    Purchased this product for an additional sensor. Works great!

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

    I would recommend this to a friend
Page 40, Showing 781-800 of 1,320 reviews
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