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One Ring Alarm Add-On Security System Window Door Contact Entry Sensor 2nd Gen

SuperiorSystems.Inc
(633)
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US $25.49
ApproximatelyC $34.68
Condition:
New
3 available209 sold
People want this. 34 people are watching this.
Breathe easy. Free shipping and returns.
Shipping:
Free USPS Ground Advantage®.
Located in: Waterford, Michigan, United States
Delivery:
Estimated between Fri, Jul 25 and Tue, Jul 29
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the shipping service selected, the seller's shipping history, and other factors. Delivery times may vary, especially during peak periods.
Returns:
30 days return. Seller pays for return shipping.
Payments:
     Diners Club

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eBay item number:154597157364
Last updated on Jul 22, 2025 08:36:16 EDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Power Source
Wireless
Custom Bundle
No
Color
White
Item Diameter
0.5 in
UPC
842861111064
Material
Plastic, Polycarbonate
Year Manufactured
2025, 2023, 2022, 2021, 2020
Item Length
2 in
Sold By
SuperiorSystems.Inc
California Prop 65 Warning
Products may contain cancer causing materials
Brand
Ring
Type
Anti-Theft
Item Height
0.5 in
Model
4SD1SZ-0EN0
Features
Flash Light
Country/Region of Manufacture
Indonesia
Smart Home Protocol
Z-Wave
Item Width
1.5 in
Item Weight
2 oz
Operating Sound Rating
110 dB

Item description from the seller

About this seller

SuperiorSystems.Inc

99.2% positive feedback•3.0K items sold

Joined Jun 2010
Usually responds within 24 hours
We offer brand new smart home security products. Specializing in home surveillance, we have an extensive selection of bundles, add-on accessories, and replacement parts for your security system. Let ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

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Seller feedback (637)

All ratings
Positive
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  • o***b (1675)- Feedback left by buyer.
    More than a year ago
    Verified purchase
    Brand new, well packaged. The seller shipped it fast but UPS botched it and took three days longer than originally expected.
    Reply from: superiorsystems.inc- Feedback replied to by seller superiorsystems.inc.- Feedback replied to by seller superiorsystems.inc.
    I'm sorry about the delay with USPS, thanks again for your feedback.
  • t***2 (349)- Feedback left by buyer.
    More than a year ago
    Verified purchase
    Arrived quickly, exactly as described… Will use this seller again!
    Reply from: superiorsystems.inc- Feedback replied to by seller superiorsystems.inc.- Feedback replied to by seller superiorsystems.inc.
    Thanks so much for your business and for your feedback. Have a wonderful week. - Mitch
  • 5***5 (315)- Feedback left by buyer.
    More than a year ago
    Verified purchase
    As described. Quick shipping and fairly priced. 
    Reply from: superiorsystems.inc- Feedback replied to by seller superiorsystems.inc.- Feedback replied to by seller superiorsystems.inc.
    Thank you!
See all feedback

Product ratings and reviews

Learn more
4.9
77 product ratings
  • 72 users rated this 5 out of 5 stars
  • 5 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 65 reviews
  • by i7sxfmegqgk@deleted
    Aug 03, 2021Top favourable review

    Creativity Needed

    Although most window/door layouts allow easy installation of these sensors, sometimes you have to be a little creative in making them work. For my windows, I had to make a small metal bracket so that the sensor would clear the screen. It works and is a reliable part of the Ring Alarm System. Buying in bulk makes them a good value.

    Verified purchase: YesCondition: NewSold by: deal-breakers

  • by winy_0
    Jun 15, 2021

    Smaller size but much easier to fit

    This model is much smaller than 1st Gen model and is great for tight spaces. It also uses button batteries which are easier to get and cheaper than the lithium batteries used in 1st Gen. Set up is a breeze.

    Verified purchase: YesCondition: NewSold by: cspkings

  • by 777sosa
    Apr 03, 2022

    Great deal!

    Was a great price for brand new authentic Ring sensors. Was so easy to sync to my system. AA++

    Verified purchase: YesCondition: NewSold by: pabelpam

  • by csufsu
    Jul 28, 2020

    Open box = used

    We have many Ring sensors - these were the first 2nd Gen type. They we purchased used (open box). Someone had tried to install them and as a result had taken off the coverings for the sticky sides, which were unusable. Fortunately I was able to use them in a place where screws worked well. The sesnors worked fine after I replaced one of the batteries.

    Verified purchase: YesCondition: Pre-OwnedSold by: smart_home_stuff

  • by ron9523
    Sep 29, 2020

    Contacts work exactly as they are supposed to.

    They work great! Installed sensors and linked to the ring alarm. Now before I go to bed, instead of having to go around the house to check that all the doors are closed and locked, I can just look at the Ring app. Occasionally I drive away and then think I forgot to close the door (only actually happened once), with this I can check in the app that the door is closed.

    Verified purchase: YesCondition: NewSold by: ephesushomegoods

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