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4.2 out of 5 stars. 31 reviews
A woman outside with a dog
A woman outside with a dog

X-SENSE 10-Year Battery Smoke Detector with Photoelectric Sensor and LED Warning Light, 1 pk.

  • New Arrival

X-SENSE 10-Year Battery Smoke Detector with Photoelectric Sensor and LED Warning Light, 1 pk.

Item # 6160102

X-SENSE X-SENSE 10-Year Battery Smoke Detector with Photoelectric Sensor and LED Warning Light, 1 pk.
X-SENSE X-SENSE 10-Year Battery Smoke Detector with Photoelectric Sensor and LED Warning Light, 1 pk.
$18.99

Color:

Spend $49.99 to unlock free delivery!

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  • New Arrival

X-SENSE 10-Year Battery Smoke Detector with Photoelectric Sensor and LED Warning Light, 1 pk.

Item # 6160102

X-SENSE X-SENSE 10-Year Battery Smoke Detector with Photoelectric Sensor and LED Warning Light, 1 pk.
X-SENSE X-SENSE 10-Year Battery Smoke Detector with Photoelectric Sensor and LED Warning Light, 1 pk.

$18.99

Color:

Spend $49.99 to unlock free delivery!

This item is available online only

Delivery to

Free standard delivery on online footwear & Clothing purchases of $49 and over.

Add a protection plan
Powersport plans are not available in CA.
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Protect your home and family with the professional-grade reliability of the X-SENSE SD21 Smoke Detector. Powered by a sealed 10-year lithium battery, this alarm delivers continuous, decade-long protection without the hassle of annual battery replacements or late-night low-battery chirps. It features an advanced photoelectric sensor that maximizes early detection of smoldering fires while its 24/7 intelligent self-testing system constantly verifies battery and circuitry health. Equipped with a clear, 3-color LED status indicator, this alarm provides instant visual peace of mind so you always know your home is secure at a glance. Ideal for bedrooms and hallways, this compact unit installs seamlessly in minutes for top-tier safety compliance.

  • 10-Year battery smoke detector with photoelectric sensor
  • Self-Test system ensures battery and circuitry health
  • 3-Color LED status indicator for instant peace of mind

Q&As

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22 reviews with 5 stars.
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4.2
2 out of 3 (67%) reviewers recommend this product

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1 to 4 of 31 Reviews .
1 – 4 of 31 Reviews
Review 1

Best value

10 days ago
5 smoke alarms for price 2 at local hardware store. Good quality.

Originally posted on X-SENSE.com

Dukedom, TN
Review 1
Age65 or over
GenderFemale

TERRIBLE and short lived

a month ago
The local fire department installed Model SD2J0AX in my home. I am a low income senior citizen so I was not charged HOWEVER, they were installed Sept. of 2025 and it is now July 2026 (not even a year) and I have found TWO do not work. It is hard telling how long they have not been working. I just tested them today August 12, 2026. The test button does nothing. No lights. They didn't even chirp like detectors do when they have low battery. They both say Date of Manufacture is May 7, 2025. Even if going by that date, these do not last 10 years. Not even close. Again today's date is 8/12/2026. I'd like to send these back to X-Sense owners so they can hang them in their homes.

Originally posted on X-SENSE.com

Response from X-SENSE.com:
a month ago
X-Sense Support
Dear Customer, We sincerely apologize for any concern or inconvenience you have experienced with your SD2J0AX smoke alarms. We deeply care about your safety and peace of mind. Please note that the SD2J0AX model features a safety activation switch on the back. When the device is removed from its mounting bracket, this switch releases to turn off power, meaning the alarm will only respond when the back switch is fully pressed down (either by mounting it onto the bracket or holding it manually). Additionally, testing the unit requires a brief press of the Test/Silence button rather than holding it down. Our customer support team has reached out to you via email to provide further assistance and ensure your concerns are thoroughly addressed. Please feel free to contact us at: service@x-sense.com Best regards, X-Sense Support Team
Virginia
Review 1
Age65 or over

Work poorly

3 months ago
I bought 3, 2 of them go off for no reason. Absolutely no smoke, in bedrooms far from the kitchen. Installed exactly as instructed. Replaced already. Do not recommend.

No, I do not recommend this product.

Originally posted on X-SENSE.com

Response from X-SENSE.com:
2 months ago
X-Sense Support
Hi Trey, We are sincerely sorry for the disruption and frustration caused by the false alarms. False alarms can sometimes be triggered by tiny particles, dust, or airflow changes around the sensor chamber. We stand behind our quality and would love to investigate what happened or assist you further. Please feel free to reach out to our team at support@x-sense.com.
Roanoke, Virginia, United States
Review 1

Absolute garbage

3 months ago
Absolute garbage, detectors go off when there is NOTHING to make them go off. Waste of my money, bought 3 replaced all 3.

Originally posted on X-SENSE.com

Response from X-SENSE.com:
2 months ago
X-Sense Support
Hi Trey, We are truly sorry for the frustration caused by the false alarms you experienced. We remember reaching out to assist you with replacements recently for this issue! We're glad we had the opportunity to resolve this for you and hope your replacement units are performing well. If you need any further support down the road, please don't hesitate to contact us at support@x-sense.com. Thank you again for your patience and for giving us the chance to make things right!