Name: X-Sense Smoke Alarm, 10-Year Lithium Battery Life Fire Alarm with LED Indicator, 5-Pack
Brand: X-Sense
SKU: 1ZGOZAI66KFP
Price: 95.99 CAD
Availability: OutOfStock
Rating: 4.8 (131 reviews)

Walmart US Ecommerce Website

GENERAL MERCHANDISE

PHARMACY

GROCERIES

VUDU

SPARK

PHOTO

ADVERTISING

SAVINGS CATCHER

GIFTCARDS

INHOME

AFFILIATE

ONEAPP

LOTUS

HELP

SMART_REORDER

GROCERY

CONV_COMMERCE

Shop

The Home Event PIP banner dWeb Wk 14-15 2026

Buy Box Ad Container Module for Desktop

Custom HTML Module - About Klarna

Custom HTML Module - About SalesFinancing - Second update

You'll choose a plan at checkout.

#515357

I want delivery savings with Delivery Pass

#0071dc

NEW Fulfillment Tue Apr 15 2025 2:17 PM EDT

MTZ Team | Marquee 1 Ad | Item Page

MTZ Team | Marquee 2  Ad | Item Page

MTZ Team | Skyline Ad | Item Page

Other products of interest

MTZ Team | Sponsored Product Carousel - Item Page

More items to explore

MTZ Team | Sponsored Product Carousel - Item Page Broad 

NEW AddonServicesRedesign Fri Jul 18 2025 1:30 PM EDT

NEW AddToCart Mon Jul 14 2025 3:50 PM EDT

NEW AddToCart Tue Apr 15 2025 2:19 PM EDT

NEW BrandBoxDisplayAd Mon Jul 14 2025 9:14 PM EDT

NEW BrandLink Wed Apr 23 2025 12:07 AM EDT

NEW Breadcrumb Mon Apr 07 2025 8:23 PM EDT

Walmart Rewards Mastercard

NEW FinancingOptions Tue Dec 10 2024 3:32 PM EST

I want shipping & delivery savings with

NEW Fulfillment Mon Jul 14 2025 4:00 PM EDT

New Item Page - Nutrition Value Placeholder Module, Wednesday, February 08, 2023, 5:11:53:90 pm

New Item Page - Product Description Placeholder Module, Wednesday, February 08, 2023, 5:14:04:38 pm

New Item Page - Product Ingredients Placeholder Module, Friday, February 10, 2023, 10:34:23:79 am

New Item Page - Product Specifications Placeholder Module, Wednesday, February 08, 2023, 5:15:29:61 pm

New Item Page - Reviews Placeholder Module, Wednesday, March 22, 2023, 10:04:29:34 am

New Item Related Shelves Module, Thursday, June 15, 2023, 6:08:51:10 am

 Price Match Policy

Prices, terms, and availability may vary online, in stores, and in–app. If the advertised price is not shown here, inventory at the advertised price may now be sold out. Please see the other offers, if available, while quantities last. Some items may be available from Marketplace Sellers, who set their own prices, and are not eligible for price match. Items sold in store by Walmart may be eligible for a price match to online items shipped and sold by Walmart. For variable weight items, price shown is an estimated price only – you will be charged for the actual weight of the item. See our

NEW LegalPriceDisclaimer Mon Jul 14 2025 4:11 PM EDT

NEW LegalPriceDisclaimer Wed Apr 30 2025 12:13 AM EDT

NEW ListsAndRegistries Tue Apr 15 2025 4:50 PM EDT

NEW PaymentPlans Mon Jul 14 2025 4:15 PM EDT

NEW PaymentPlans Tue Apr 15 2025 1:31 PM EDT

NEW PriceInformation Tue Apr 15 2025 1:30 PM EDT

NEW ProductDescriptionPlaceholderATF Tue Jul 08 2025 11:41 PM EDT

NEW ProductFlags Thu Apr 10 2025 11:42 PM EDT

NEW ProductHighlightsPlaceholder Wed Jul 02 2025 12:43 AM EDT

NEW ProductImages Tue Apr 15 2025 2:13 PM EDT

NEW ProductName Tue Apr 15 2025 12:53 PM EDT

NEW ProductReturnPolicyDetails Tue Dec 10 2024 3:17 PM EST

NEW ProductReturnPolicy Mon Jul 14 2025 5:04 PM EDT

Return Policy

NEW ProductReturnPolicy Tue Apr 15 2025 2:28 PM EDT

NEW ProductStickyBuyBox Wed Jul 02 2025 12:55 AM EDT

NEW PromoDiscount Tue Apr 15 2025 6:53 PM EDT

New SellersSecondaryBuyBox Module, Tuesday, September 05, 2023, 4:02:21:76 pm

Shop Confidently

NEW ShopWithConfidence Thu Jan 15 2026 2:20 PM EST

NEW SocialProofMessage Tue Apr 15 2025 7:17 PM EDT

NEW SoldAndShippedBy Mon Jul 14 2025 5:04 PM EDT

NEW SoldAndShippedBy Tue Apr 15 2025 2:23 PM EDT

New!

More savings, less stress.

HSK_Subscribetosave_E_v2

NEW SubscriptionOptionsModule Tue Apr 15 2025 6:44 PM EDT

NEW SubscriptionPriceMessage Wed Apr 23 2025 6:48 PM EDT

NEW Variants Wed Apr 23 2025 11:01 PM EDT

[Sticky] BuyBoxAd Mon Aug 11 2025 3:59 AM EDT

[Sticky] PriceInformation Mon Jul 14 2025 4:03 PM EDT

Syndigo

True

dWeb: L1/L2- Comparison Chart- WK 07, 2026

#000000

Item Carousel - Rich Relevance 1

RR carousel

Item Carousel - Rich Relevance 2

RR carousel 2

Item Carousel - Rich Relevance 3

X-Sense Smoke Alarm, 10-Year Lithium Battery Life Fire Alarm with LED Indicator, 5-Pack

<ul><li><strong>Continuous Power Supply</strong>: Equipped with a sealed 10-year lithium battery for continuous power with no replacement required during the 10-year life of the alarm.</li><li><strong>Self-Monitoring Operation</strong>: Features an auto-check function that constantly monitors itself and quickly warns of faults or a weak battery with an 85 dB alarm and flashing red LED indicator.</li><li><strong>Rapid Smoke Detection</strong>: Uses the latest sensor technology to respond more quickly to hazardous smoke than traditional smoke detectors, while minimizing false alarms.</li><li><strong>Simple Installation</strong>: Easy and secure to install with included screws, anchor plugs, and a mounting bracket, or can be installed with 2.8 in adhesive magnetic pads (not included).</li><li><strong>Fire-Retardant Housing</strong>: Made with an upgraded ABS plastic housing that is fire-retardant and high temperature resistant.</li></ul>

<ul><li>Manufactured in accordance with the UL 217 Standards</li><li>【Please Note】: It is a basic standalone unit; it does not support wireless interconnection, does not have Wi-Fi, and cannot be used with a base station</li><li>【Auto-Check Function】: Constantly monitors itself and quickly warns you of faults or a weak battery; clearly informs you of the working status of the alarm with its 85 dB alarm and flashing red LED indicator</li><li>【10-Year Battery Life Smoke Detector (Not AC Hardwired)】: Equipped with a sealed 10-year lithium battery for continuous power with no replacement required during the 10-year life of the alarm</li><li>【Sensitive &amp; Intelligent】: Using the latest sensor technology, this smoke detector responds more quickly to hazardous smoke than traditional smoke detectors, while at the same time minimizing false alarms, e.g. from cigarette smoke</li><li>【Quick and Easy Installation】: No need for rewiring, as the battery-operated smoke alarm is easy and secure to install with the included screws, anchor plugs, and mounting bracket, or just use a pair of Ø 2.8 in adhesive magnetic pads (not included) to effortlessly install it on a wall or ceiling</li><li>【Premium Quality】: Made with an upgraded premium ABS plastic housing, this alarm is fire-retardant, high temperature resistant</li></ul>

Power Type

Battery Life

Brand

Features

Contains Batteries

Is Smart

Accessories Included

Battery Size

Count Per Pack

Color

Has NRTL Listing Certification

Assembled Product Dimensions (L x W x H)

The X-Sense SD21 Smoke Alarm offers reliable fire protection with its 10-year battery life, powered by a sealed lithium battery that requires no replacement during its lifespan. This standalone unit features an auto-check function, continuously monitoring its performance and alerting you with an 85 dB alarm and flashing red LED if any faults or battery issues arise.
<br />With the latest sensor technology, it quickly detects hazardous smoke while minimizing false alarms. Installation is quick and easy, with screws, anchor plugs, and mounting brackets included for secure mounting. The durable, fire-retardant ABS plastic housing ensures long-lasting performance, making this alarm a trusted safety solution for your home.

Assembled Product Weight

Manufacturer Part Number

Universal Product Code (UPC check)

<!DOCTYPE html>
<html>
   <head>
      <meta name="viewport" content="width=device-width, initial-scale=1">
      <link
         rel="stylesheet"
         href="https://unpkg.com/tachyons@4.12.0/css/tachyons.min.css"
         />
   </head>
   <body>
      <div class="flex flex-column justify-center w-100 ph3 normal lh-copy pt1">
            <div class="tc">
               <img src="https://i5.walmartimages.com/dfw/8822aef6-7abe/k2-_f4ee767f-a90a-4f70-be39-71e5d7b238a0.v1.jpg">
               <h3>4 equal payments</h3>
               <h4 class="gray">Buy what you love and split the cost. It's that easy. </h4>
            </div>
            <ul>
            <b>
               <li>Add item(s) to your cart.</li>
               <li>
                  Add items to checkout and choose 
                  <image height="14" width="auto" src="https://i5.walmartimages.com/dfw/8822aef6-7abe/k2-_f4ee767f-a90a-4f70-be39-71e5d7b238a0.v1.jpg"></image>
               </li>
               <li>Enter your debit or credit card information. </li>
               <li>Your first payment is taken when the order is processed, and the remaining 3 are automatically taken every two weeks.</li>
            </b>
            </ul>
            <p class="gray">Please note that a higher initial payment may be required for some purchases. Pay later in 4 <a href="https://cdn.klarna.com/1.0/shared/content/legal/terms/0/en_ca/paylaterin4" target="_blank">terms</a> available here. For Quebec residents, these Pay Later 4 <a href="https://cdn.klarna.com/1.0/shared/content/legal/terms/0/en_ca/paylaterin4_quebec" target="_blank">terms</a> are applicable. </p>
      </div>
   </body>
</html>

Total Count

Ease Of Installation

Price

Value

Obviously I have no idea of these really have a 10 year battery life because that would take 10 years to find out. but they were super easy to install and im hoping i get many years of not being woken up in the middle of the night to the smoke alarm beep from hades.

walmart.com

I purchased this smoke alarm to replace one that was 9 years old.  Delivery was fast,  easy to install and I like that it has a tab year battery life! I change all my batteries every year at New year's.  I typically change around 24 to 30. I plan to purchase more to replace other alarms throughout my house.  The 10 year battery will reduce the batteries to be replaced every year and it will pay for itself! Easy installation and very loud alarm!!!

Excellent product, great value!

I just got this, so I can't speak as to its battery longevity. But I've had no false alarms and via testing I've confirmed it is very loud. It was easy to get installed (to be fair, I just used the drill holes left behind by the previous smoke alarm I had) and user friendly. It does what it needs to do, so pending my experience with the battery, I recommend it.

Loud, doesn't give false alarms: It just works

I checked the reviews; this product seems to be on par with other brands but is much cheaper.   I will not know about the battery life for a few years.

best price

Battery lasts for years, neat %26 compact easy to install  ( I did it myself ) just press the button on the outside of alarm once a week %26 thats it.  Instructions  were easy to follow  A

true

very easy to install. With a 10 year battery life just install and forget for 10 years then replace the entire unit. No more buying a 9 volt battery every year

Easiest ever to install

Easy to install. Batteries last for 10 years! Excellent gift. My mother-in-law had a fire in an unexpected place when the sun reflected off a mirror onto a fire-prone material. The smoke detector saved her life and her home!

this was super easy to put up, and it says that it will last me 10 years I did not have to put a battery in it. It has one. I would recommend this to anyone. Don't hesitate just get it. It's a good one

They installed okay, although they are smaller bases than what I had before, so of course, now I'm wondering if I need to repaint walls. In hindsight, I should have purchased the same (more expensive) name brand units. But these are okay on a tight budget.

Work, but smaller.

Price is great.  However, if you already have had a hard wired detector which finally went bad, you will have a very difficult time installing this battery operated detector.  Screw holes do NOT line up, and with the already installed module in place, finding new locations for screws is hard to do.

battery device to hard wired location =problematic