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X-Sense 10-Year Battery (Not Hardwired) Combination Smoke and Carbon Monoxide Detector Alarm, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards, Auto-Check, SC03

4.6 4.6 out of 5 stars 2,269 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Smoke & Carbon Monoxide Alarms by X-Sense

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About this item

  • 10-Year Battery Life: This combination smoke alarm and carbon monoxide alarm provides 10 years of continuous power with a built-in lithium battery; provides continuous monitoring of smoke and CO levels, even if there's a power failure; an end-of-life signal will let you know when it’s time to replace the unit for safety
  • Alarm Types for More Convenient: Different alarm patterns of this carbon monoxide alarm and smoke alarm tell you it is either smoke or carbon monoxide is detected without checking the LCD display; smoke alarm: delivers 3 long beeps every 1.5 seconds and the red LED flashes with the alarm sound; CO alarm: delivers 4 quick beeps every 5. 8 seconds and the red LED flashes with the alarm sound
  • High Accuracy and Sensitivity: X-Sense carbon monoxide fire alarm is equipped with combination photoelectric smoke and electrochemical CO sensors that work independently of each other; instantly notifies you when dangerous smoke or CO concentration is detected; provides the ultimate protection from 2 deadly threats, all contained in 1 unit
  • Simple to Use: The test/silence button of this smoke alarm carbon monoxide alarm enables you to test the alarm weekly, and to easily silence the alarm when false alarms occur; malfunction and low battery warnings allow you to easily know the working status of the alarm; in case of an emergency, an alarm tone of over 85 dB will instantly alert the entire household, even those in sleep
  • Easy Installation with Quality: X-Sense smoke carbon monoxide alarm combo requires no rewiring; easy to mount on any wall or ceiling without an electrician; all X-Sense carbon monoxide alarm and smoke alarm are rigorously tested to meet UL 217 and UL 2034 safety standards; comes with a lifetime customer support
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Customer ratings by feature

Easy to install
4.6 4.6
Battery life
4.3 4.3
Value for money
4.2 4.2

Customers usually keep this item

This product has fewer returns than average compared to similar products.

Frequently bought together

$36.99
Get it as soon as Tuesday, Apr 2
In Stock
Sold by X-Sense US and ships from Amazon Fulfillment.
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$19.77
Get it as soon as Tuesday, Apr 2
In Stock
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Product Description

SC03
X-Sense smoke carbon monoxide detector alarm 10 years battery powered SC03

X-Sense smoke carbon monoxide detector alarm 10 years battery powered SC03

X-Sense smoke carbon monoxide detector alarm 10 years battery powered SC03

X-Sense smoke carbon monoxide detector alarm 10 years battery powered SC03

X-Sense smoke carbon monoxide detector alarm 10 years battery powered SC03

10-Year Battery Life

This alarm comes with a 10-year sealed lithium battery that lasts the lifetime of the detector, reliably protecting your home 24/7, even during power outages.

Photoelectric and Electrochemical Sensors

Built with advanced sensors and an intelligent chipset, this alarm accurately detects smoke and carbon monoxide and gives the earliest possible warning, all while effectively minimizing false alarms.

Self-Check Function

This combination alarm automatically checks its battery level and sensors every 60 seconds to ensure proper functioning.

Activates Automatically upon Installation

Simply install the unit onto any ceiling or wall with the included mounting bracket, screws, and anchor plugs. When installed properly, the alarm will automatically turn on.

X-Sense smoke carbon monoxide detector alarm 10 years battery powered SC03

X-Sense smoke carbon monoxide detector alarm 10 years battery powered SC03

X-Sense smoke carbon monoxide detector alarm 10 years battery powered SC03

LED Indicator

A multi-color LED indicator (red, green, yellow) indicates the working status of the alarm. Paired with audible beeps, you will always know what’s going on around your house.

Loud 85 dB Buzzer

This alarm is equipped with an 85 dB buzzer that is loud enough to warn everyone in your home of potential danger, even for those with impaired hearing or in deep sleep.

Dust-Proof Isolation Plate

An isolating plate installed inside the alarm allows smoke to easily pass through the sensor while preventing dust from contaminating the electronics, minimizing false alarms.

SC03 SC08 XS01
X-Sense SC03 X-Sense SC08 X-Sense XS01
Customer Reviews
4.6 out of 5 stars
2,269
4.6 out of 5 stars
701
4.5 out of 5 stars
4,694
Detection Type Smoke & Carbon Monoxide Smoke & Carbon Monoxide Smoke
Sensor Type Photoelectric & Electrochemical Photoelectric & Electrochemical Photoelectric
Battery Life 10 Years 10 Years 10 Years
Mute Mode
LCD Display
Safety Standards UL 217 & UL 2034 UL 217 & UL 2034 UL 217
Item Size Ø 5.7 x 2 in Ø 5.7 x 2 in Ø 3 x 1.9 in
Escape Light

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Warranty & Support

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Product Warranty: For warranty information about this product, please click here

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X-Sense 10-Year Battery (Not Hardwired) Combination Smoke and Carbon Monoxide Detector Alarm, Dual Sensor Smoke CO Alarm Complies with UL 217 & UL 2034 Standards, Auto-Check, SC03


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Smoke and Carbon Monoxide Detector Battery Powered Dual Sensor Combination Smoke & CO Alarm with LCD Screen, Led Indicator and Loud Sound Alert, Complies with UL 217 & UL 2034 Standards
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Price$36.99$169.99$179.99$39.99-8% $36.99
Typical:$39.99
$21.99
Delivery
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Customer Ratings
Easy to install
4.6
4.7
4.7
4.7
4.5
4.4
Battery life
4.3
4.5
4.5
4.5
4.5
4.1
Value for money
4.2
4.3
4.2
4.3
4.4
4.8
Sold By
X-Sense US
X-Sense US
X-Sense US
X-Sense US
Hathephs US
HappethomeUS
power source
Battery Powered
Battery Powered
Battery Powered
Battery Powered
Battery Powered
Battery Powered
sensor type
Electrochemical, Photoelectric
Photoelectric, Electrochemical
Electrochemical, Photoelectric
Photoelectric, Electrochemical
Electrochemical, Photoelectric
electrochemical,photoelectric
style
Combination Smoke and Carbon Monoxide Detector
Standalone Model
Standalone Model
Standalone Model
Standalone
Circular
alarm
Visual, Audible
Audible
Audible
Audible
Audible & Visual
Visual
weight
0.68 pounds
0.69 pounds
0.69 pounds
1 pounds
0.32 pounds

Important information

Bulb Voltage

3 volts

Customer reviews

4.6 out of 5 stars
4.6 out of 5
2,269 global ratings

Customers say

Customers like the safety of the gas smoke fire alarm. They say it makes them feel safer and provides great protection from fire and carbon monoxide. Customers are also happy with the loud vibration, appearance, value, and ease of installation. However, some customers differ on lighting, quality, and battery life.

AI-generated from the text of customer reviews

82 customers mention77 positive5 negative

Customers find the installation of the gas smoke fire alarm to be simple. They mention that all the hardware is included for easy installation, and the instructions are clear. The battery units look good and are easy to mount with the screws, plugs, and mounting plate that come with it. No hardwiring is required, and it's easy to hand.

"All hardware is included for easy installation. Easy to test and the battery seems to be lasting very happy with this purchase...." Read more

"Exactly what I was wanting. Easy to install" Read more

"...These battery units look good are easy to install over the original hardwire hole and last 10 years!..." Read more

"...They're easy to mount, though you need a drill with a 6mm/.25 inch drill bit (and a vacuum cleaner to clean up), they are in storage mode until you..." Read more

43 customers mention43 positive0 negative

Customers are satisfied with the value of the gas smoke fire alarm. They mention that it is an amazing product for the price, and well built. Some say that it's easy to install and will last 10 years.

"...as long as they detect and last 10 years, great product at a great decent price." Read more

"Good value, but very hard to align so it's sitting straight up and down when installed...." Read more

"...The price was reasonable for this double duty unit." Read more

"...The battery life is 10yrs which is GREAT.BEST value for the money.I definitely feel safer.Esp. since I live in a mobile home." Read more

17 customers mention17 positive0 negative

Customers are satisfied with the appearance of the gas smoke fire alarm. They mention it's well-designed, attractive, and gets good write-ups.

"...And 10 year battery life. Pretty cool...." Read more

"...Gets good write-ups and looks solid; I'm looking forward to about 10 years use. What was delivered to me was exactly as described on Amazon...." Read more

"...I can't comment on the battery performance, I can say that these look great, and the install was very forgiving...." Read more

"...Otherwise, this device is very attractive and well-designed...." Read more

10 customers mention10 positive0 negative

Customers find the gas smoke fire alarm to be an important product for safety. They say it makes them feel safer at home, provides great protection from fire and carbon monoxide, and has a 10 year battery life.

"They work great. Lifesavers!" Read more

"...couple months and the battery has been working strong and keeping my house safe...." Read more

"Love the easy installation and feeling of safety at home." Read more

"...Delivery was quicker than I thought.It will make my family more safe." Read more

10 customers mention7 positive3 negative

Customers like the vibration of the gas smoke fire alarm. They mention that it works fine and is loud.

"...I received the item quickly. It was very easy to install. The alarm is very loud, which is important to me...." Read more

"...Tested it and is loud enough to be heard everywhere in office. Good quality product" Read more

"...Just be prepared that the alarm is LOUD! I almost backed off the stepladder while testing it...." Read more

"...They were easy to install. They are loud and look top-notch!" Read more

86 customers mention59 positive27 negative

Customers are mixed about the quality of the gas smoke fire alarm. Some mention that the alarm itself is good quality, well-built, and easy to install. However, others say that it gave a false alarm and stopped working after only 3 years.

"...They don't seem to be hyper sensitive, it did not set off the alarm when I was BBQ'ing on my patio" Read more

"Works great" Read more

"...attach the detector to the backing it is activated and there is no turning it off...." Read more

"The alarm itself is good quality. But why do they give you such cheap ineffective gypsum board plastic inserts?..." Read more

39 customers mention25 positive14 negative

Customers are mixed about the battery life of the gas smoke fire alarm. Some mention that it has a 10 year battery life, and works strong. They also like that the batteries are not going to go bad every few years. However, others say that the battery on both gave up at the same time.

"...look good are easy to install over the original hardwire hole and last 10 years!..." Read more

"...CO2 + smoke and one didn't work because when I installed it, the battery was faulty and chirped every 4 minutes or so...." Read more

"...I feel more safe and they were easy to install. And 10 year battery life. Pretty cool...." Read more

"...This has both and the battery life is 10 years after which you should buy new ones. I tested it and it works...." Read more

6 customers mention2 positive4 negative

Customers are mixed about the lighting of the gas smoke fire alarm. Some mention that the strobe light is bright and the indicator light tells you it is working. However, others say that the light still flashes green, blinks green and is not constant.

"...The strange thing is that it still flashes green. I assume it was because of the supposedly 10 year battery. Buyer beware!" Read more

"...AND Best of all there is a light!!!! Green means its working, yellow means it is not working and RED means DANGER." Read more

"a white light strobe light flashes every 2 minutes and looks like lightning,very annoying watching tv or trying to sleep...." Read more

"Initially, I was happy with this device. However, the green light went off in less than a day and the device appears to be dead." Read more

Mount does not match to common electrical back box, needs modification
4 Stars
Mount does not match to common electrical back box, needs modification
I'm sure the X-Sense SC03 10-Year Battery Smoke Carbon Monoxide Detector Alarm is great. Gets good write-ups and looks solid; I'm looking forward to about 10 years use. What was delivered to me was exactly as described on Amazon. However, the proprietary mount ring does not allow the pre-drilled holes to line up with a common rectangle, square or round electrical back box, and the provided wall mount inserts and screws don't fit beside the back box. So, as you can see in my photos, I took down the old Kiddie alarm (and took down their ring that installed fine 7 years ago). A common 4" round back box was present (in all 5 of my locations). I had to drill and countersink new holes in the SC03 mounting ring. Then the ring would stay in place and the alarm mount and activate properly. Looks fine, is operational, but the user needs to be a bit handy to make this happen.
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Top reviews from the United States

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Reviewed in the United States on March 6, 2021
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Top reviews from other countries

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Christina
1.0 out of 5 stars Does not do the job
Reviewed in Canada on October 15, 2020
Size: 1-PackVerified Purchase
2 people found this helpful
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TheFiks
1.0 out of 5 stars You don't get 5 units, you only get 1.
Reviewed in Canada on February 19, 2021
Size: 1-PackVerified Purchase
Ramdath Jagessar
3.0 out of 5 stars Simple and easy to use
Reviewed in Canada on December 21, 2020
Size: 1-PackVerified Purchase
C
1.0 out of 5 stars Inacceptable
Reviewed in Canada on January 3, 2021
Size: 1-PackVerified Purchase