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X-Sense Smart Smoke Detector with SBS50 Base Station, Wi-Fi Smoke Alarm Compatible with X-Sense Home Security App, Wireless Interconnected Mini Fire Alarm, Model FS31

  • Based on 586 reviews
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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, Nov 21
Order within 17 hours and 31 minutes
Available payment plans shown during checkout

Style: With Base Station


Size: 3 Smoke Detectors


Features

  • Never Miss an Alarm: Whenever smoke is detected, youll get an immediate alert on your phone; at the same time, the base station and each linked alarm will sound loudly, letting everyone at home know to evacuate
  • Build a Smart Home Safety System: The SBS50 base station supports up to 50 devices including the XS01-M smoke alarm, XC01-M carbon monoxide alarm, XP0A-MR combination alarm, STH51 thermo-hygrometer, SWS51 water leak sensor and more; the 1,640 ft (500 m) open-air connection range means you can even secure every corner
  • Instant Status Alerts: Monitor your home from anywhere and receive instant notifications for alarms, low battery warnings, faults, and more via the X-Sense Home Security app; you'll also get a notification when the danger has passed
  • Fast Fire Dispatch Within Just 3 Seconds: By subscribing to the (optional) Protect+ Premium subscription plan which provides 24/7 professional monitoring service, when an alarm is triggered, you will receive a message from the monitoring center within 3 seconds to verify the emergency. After the emergency is verified, a fire truck will be dispatched immediately
  • Control with One Button: Easily connect the base station to your Wi-Fi with one button, and quickly silence your entire system by tapping the silence button in the app or on the base station
  • Test from the App: Enjoy instant and easy peace of mind by testing the alarm from within the app, without having to climb a ladder to press a button on the device itself

Brand: X-Sense


Style: With Base Station


Power Source: Battery Powered


Color: 2.4 GHz Wi-Fi Connection via Base Station


Product Dimensions: 1.9"D x 3.1"W x 3.1"H


Alarm: Audible


Sensor Type: Photoelectric


Material: ABS


Number of Items: 3


Manufacturer: X-Sense


Brand: ‎X-Sense


Style: ‎With Base Station


Power Source: ‎Battery Powered


Color: ‎2.4 GHz Wi-Fi Connection via Base Station


Product Dimensions: ‎1.9"D x 3.1"W x 3.1"H


Alarm: ‎Audible


Sensor Type: ‎Photoelectric


Material: ‎ABS


Number of Items: ‎3


Manufacturer: ‎X-Sense


Item Weight: ‎1.32 pounds


Item model number: ‎FS31


Batteries: ‎3 CR123A batteries required. (included)


Size: ‎3 Smoke Detectors


Shape: ‎Circular


Installation Method: ‎Screw-In


Included Components: ‎6 × Screws and Anchor Plugs, 1 × User Manual, 1 × Power Adapter and Power Cable, 3 × Smoke Alarms XS01-M with CR123A Replaceable Batteries (Batteries Packed with Equipment), 1 × SBS50 Base Station


Batteries Included?: ‎Yes


Batteries Required?: ‎Yes


Battery Cell Type: ‎Lithium Metal


Warranty Description: ‎‎‎60-day money-back guarantee, 5-year quality warranty, and lifetime technical support


Date First Available: March 17, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Nov 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Love these!!
Style: With Base Station Size: 5 Smoke Detectors
Easy install instructions, easy to setup with app! Functions perfectly with alerts directly to your phone. Test anytime from anywhere! Also, purchased the outdoor camera and have them all on the same app! Live the convenience! Small design and noise level is very loud!
Reviewed in the United States on October 23, 2024 by Sara Young

  • Great investment
Style: With Base Station Size: 5 Smoke Detectors
First off I would like to say that these are super easy to setup and link together on your phone. Secondly, my wife and I had a vacation planned and we knew we would have trouble getting signal there. I saw these on here and thought that would be a great investment so that I could monitor the alarms from anywhere so I could ensure that the family and animals were safe. I installed the smoke detectors the day before we left and I had my 18+ kids that did not live in the house add the app to their phone so they could monitor it as well in case we lost signal. It was about halfway through the vacation and we managed to get a slight signal and we received an alert that the alarms were activated. I messaged the kids and asked them to run to the house to see what the issue was. I could see on the camera that there was smoke inside the house as well. Come to find out there was an outlet that decided that it wanted to melt down and if we wouldn’t have had these alarms, we would have lost our house and our pets due to a fire. Luckily my son-in-law found the issue and turned off the power to that outlet. Needless to say, I went around and replaced the outlets in the house so we shouldn’t have to worry about that again. Thanks X-Sense ... show more
Reviewed in the United States on October 27, 2024 by chris pate

  • Simple Install & Great Smart Features.
Style: With Base Station Size: 3 Smoke Detectors
These are perfect for both your home and if you own rental properties. I have them installed at 4 of my properties. Super simple to install. Drill hole for anchor, place anchor, attach the cover with the screw and you are done. The smart features are great because I can monitor them from my phone at any time. I get alerts if there are problems. I typically have guests and/or renters at my properties, so even it will alert them and me, as well as, if the property is vacant. ... show more
Reviewed in the United States on October 5, 2024 by Dawson

  • Amazing!
Style: With Base Station Size: 5 Smoke Detectors
Let me start off by saying, I am a terrible cook and tend to burn things often. I put 4 of these inside my home and another in the garage. I forgot I hade bacon in the air fryer and got sidetracked. No fire but started smoking. The kitchen alarm went off, then the rest followed. Very loud! It alerted to my phone and I was able to silence the alarm quickly! I would say the quality and performance are worth the money spent. Battery life is still to be determined. I’ve had them installed for a few months. They were simple to connect to my WiFi and the base. The base also tells you the location of the alarm. I have everything set up on my iPhone and the compatibility is flawless. 100% worth it so far! ... show more
Reviewed in the United States on July 28, 2024 by Dorothy

  • Make sure you read very carefully before ordering additional detectors to the kit
Style: With Base Station Size: 5 Smoke Detectors
I was trying to justify pulling wires to interconnect hardwired Smoke detectors. While I have done lots of wiring to this house, I wasn't sure my old body could handle it. The X-Sense ProConnected kit seemed like a reasonable alternative. Getting the app installed, all the smoke detectors connected to the hub and devices mounted, was very simple and straightforward. Even this old body had the job done in under an hour. The real problem came when we decided, since it was so easy, we would add a few more. You can't go by the looks of the device, or the ability to link devices. You MUST be very careful selecting a specific model. I ordered what looked to be the correct device and spent a painful hour trying many ways of pairing the newly purchased items. An email to support got me straightened out but it does expose the absolute confusion around the array of products. A missing item is a remote button that can be mounted and easily accessed for turning off the alarm for those smoky kitchen experiments. There are no troubleshooting guides or installation help at the Xsense website. AND NO PDF version of the manual. The manual is a 2 x 2 inch square printed manual with VERY TINY print. Very hard to read. I OCR'ed the manual but no way to post it for others to use. This is a security device and MUST have better documentation. The manual is in English english which is great but it needs to be available online. ... show more
Reviewed in the United States on October 23, 2023 by Zarthan

  • Compact units
Style: With Base Station Size: 3 Smoke Detectors
Detectors and base built with quality. Easy to create an account and setup.
Reviewed in the United States on October 25, 2024 by Craig F.

  • App was easy
Style: With Base Station Size: 3 Smoke Detectors
We were able to hook up everything easily and the app works well with our iPhones. We had no issues installing the detectors. We have noticed only one person can be in the app or it knocks the other off.
Reviewed in the United States on August 19, 2024 by Cassandra Johnson

  • Smoke didn't trig the alarm
Style: With Base Station Size: 5 Smoke Detectors
The media could not be loaded. Some reviews mentioned the smoke didn't trig the alarm. I still want to give it a try, because I really want a smoke detector that can link to the phone. This is the brand new smoke detector. If you press the test button, it will make a sound to show it works. But when you light up papers and trace the smoke with the alarm, the alarm didn't go off. I intentionally trace the smoke with the alarm, the flame almost touches the detector. From the start of the flame to the end of the flame, the alarm didn't make a sound. My hand was full of smoke smell after this video. This is scary if you depend on it to save your life in fire. This product should not be sold. It doesn't save lives, it costs lives. Buyer should be aware! ... show more
Reviewed in the United States on August 7, 2024 by Liyan X.

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