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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 $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 9 Showing 161-180 of 1,233 reviews
  • Pros mentioned:
    Installation

    Good sensor

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

    This sensor is great. Easy to stick on the window. I like how it has a long lasting watch type battery

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

    Great addition to the ring system

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

    These contact sensors work well with the Ring system. They are easy to install and make an audible charm noise whenever the door is still open opened. They also can be disabled within the ring app when you have kids going in and out! It took less than 30 minutes to install six of them and enable them within the ring app. Easy-peesy! After waiting 2 weeks for the 'next-day delivery' from Home Depot, I canceled and found these in stock at Best Buy for the same price!

    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

    Sensor

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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, easy to upgrade it into your security system. Peace of mind knowing that your home is secure

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

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

    Easy to configure.

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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 to configure with the Ring app, which provides good instructions. I might need to reinstall a sensor mounted on a window because the offset between the window and the frame doesn't allow enough overlap for the sensor's magnet to maintain consistent contact. This was my fault; I had a hunch the overlap would be inadequate, but I proceeded anyway. Good thing the sensor is mounted on glass and metal and not on painted drywall.

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

    I would recommend this to a friend

  • 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.

    Best Buy has the lowest prices and fastest shipping.

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

    Exellent sensor

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

    Really easy to install and works great. Sensor make me feel really secure and safe at home.

    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

    sensor

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

    Needed more to complete the package... very easy to install and they look good.

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

    Great Sensor

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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.

    Delivery arrived on time, installation was simple, connected to my Ring alarm seamlessly.

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

    Love My 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.

    Ring items are well designed and work flawlessly. Love the way the fit and configure

    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

    Easy 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 set up and install. I have had no failures on any that i have installed.

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

    Nice Alarm systems

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

    They were simple to install and add to our Ring App security system. We have every door protected and they have worked great since day 1. If you are looking for a great way to protect your home and install it yourself I highly recommend these comtact sensors.

    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

    A Plus

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

    You can ever go wrong with Added security. Easy to install

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

    RING SENSOR

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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 USE. EASY TO PLACE. APP LETS YOU KNOW IF BATTERY IS LOW. EXCELLENT PRODUCT

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

    I would recommend this to a friend

  • Great design update with same solid functionality

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

    Love the updated design and paired perfectly with my system. Works as it should with great battery life

    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, Size

    2nd Edition Ring Sensor

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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.

    The 2nd edition of Ring’s sensor is so much smaller. This makes it so much easier to install.

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

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

    Great Sensors

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

    Very easy to install and attach to door and windows. Easily compatible with ring base station.

    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
    Cons mentioned:
    False alarms

    Satisfied Ring Customer

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

    easey setup, quality made, no false alarms, distant connection ability

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

    ring always deliver

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

    excellent quality and easy install the perfect size

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

    Nice

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

    They are great addition to my ring system. Easy to install.makes me feel more secure in my home.

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

    Easy to install

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

    These are so easy to install and to use. They start working right away.

    I would recommend this to a friend
Page 9, Showing 161-180 of 1,233 reviews
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