Last-Minute SavingsLimited quantities.Shop now

Skip to content
Gift Ideas
Main Content

Customer Ratings & Reviews

Model:
4SD1S7-0EN0
SKU:
6129211
Your price for this item is $19.99

Customer reviews

Rating 4.8 out of 5 stars with 1076 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.6 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

98%would recommend to a friend

Customers are saying

Customers express satisfaction with the Alarm Contact Sensor (1st Gen)'s ease of use, installation process, and affordable price point. The sensor's compatibility with the Ring system and its contribution to enhanced security are also well-received. However, some customers have expressed a desire for a smaller size.

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 1,076 reviews
  • Cons mentioned:
    Size

    Rated 4 out of 5 stars

    Needed additional door sensor

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

    They do what they are supposed to. No false alarms. Triggers when door is opened. Like others have noted, they are rather large. I am using them on my doors and just used the double-sided tape to mount them. Due to the size, the wireless component goes on the door, the magnetic component that is thinner easily mounts on the frame.

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

    Rated 3 out of 5 stars

    Easy to install

    |
    |
    Posted . Owned for 5 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Pro: These were relatively easy to install and add to our existing system. Con: Larger than other brands. They took a little more work to install on the doors - external doors with the molding and clearance availability on the sliding glass doors.

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

    Rated 5 out of 5 stars

    Safety

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

    Great for safety and easy to place on doors. A number of our neighbors purchased these also after seeing ours

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

    Rated 5 out of 5 stars

    Ring sensor

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

    This ring sensor works very well and was easy to set up. Gives me Peace of mind to know if someone opens the door or window.

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

    Rated 5 out of 5 stars

    Awesome product for the price

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

    Bought this to extend my Ring starter kit. Added additional sensors were easy with scanning the QR code. Took about 10 mins to add on my overall system.

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

    Rated 5 out of 5 stars

    Just like if they gave as part of security kit

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

    I got the extra contact sensors and there was no problem setup them up and then placing on windows or doors. Note: always setup 1 device at a time and time place where needed.

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

    Rated 5 out of 5 stars

    Ring alarm system

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

    Ring alarm system. I bought additional sensors to complete my alarm system. They had a great price and they were delivered real fast I would’ve recommend the ring system to anyone.

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

    Rated 5 out of 5 stars

    Another great Ring product

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

    If you have an alarm system with Ring, then this will come in handy for you. Sensor works as great as any other. I like that it lights up when a door is open. Extremely easy to setup!

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

    Rated 5 out of 5 stars

    Love the Ring security system

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

    I love the Ring security system. It is easy to install and use. Best Buy is the only place you can buy the 6 pack of sensors and are cheaper than buying 2 at a time on Amazon

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

    Rated 5 out of 5 stars

    Sensors for RING

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

    Bought these to finish the RING system in a home that was to be unoccupied. Very easy install. On one there was difficulty but the RING support team figured it out.

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

    Rated 5 out of 5 stars

    Great sensors

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

    Ring has revolutionized the home dorebell and are trying to do the same thing with DIY home security! Another awesome product that works great with your ring security system!

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

    Rated 5 out of 5 stars

    very simple - and that’s a great thing...

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

    needed this for 2 additional bedrooms...very easy to sync with ring alarm and install...wish there was an option to get the alarm with more sensors when purchasing the main unit...

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

    Rated 5 out of 5 stars

    Home security that is affordable

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

    Best decision ever to go with Ring Home security and additional door sensors for sliding doors, side doors and windows. Easy to install and hooks up with Ring seamlesslessly.

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

    Rated 5 out of 5 stars

    Great product for home security

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

    I absolutely love this product. Ring is a very reliable brand to use. The contact sensors are what make me feel safe. When their just 6 inches apart they’ll alert your base station

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Works like Advertised

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

    These sensors were placed on a number of our doors going to the outside. We've had them for approximately four months now and they have worked perfectly. No problems.

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

    Rated 5 out of 5 stars

    Easy to install

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

    Ring alarm system is the easiest system I have ever worked on. I have 14 window sensors, one PIR, controller, keypad and Seaver’s extender set up in less than 45 min.

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

    Rated 5 out of 5 stars

    I love Ring!

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

    These sensors work great. They are easy to pair and sync right up with the hub. I love the whole Ring concept for security and these sensors help make things easy.

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

    Rated 5 out of 5 stars

    Great

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

    Bought my ring alarm starter kit and ended up needing more door/window sensors. Went to Best Buy to pick these up and set them up in less than 10 minutes.

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

    Rated 5 out of 5 stars

    Awesome addition to alarm system

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

    The Ring alarm is great. These contact sensors install in minutes. I love that each one has a unique qr to scan for setup. So easy and such a great product.

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

    Rated 5 out of 5 stars

    Works great

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

    If you are not good with technology this is a good buy, everything is self explanatory and it alerts you if you did not setup correctly.. it even have instructional videos

    I would recommend this to a friend