$18 Compact 4 in. Battery Powered Smoke Detector w

Updated August 28, 2026

ith Photoelectric Sensor 21031428 Condition: New Damaged?: No Missing Parts?: No Missing Parts Description: Only has what's shown in pictures UPC: 047871314287 Retailer Product URL: https://www.homedepot.com/p/Kidde-Compact-4-in-Battery-Powered-Smoke-Detector-with-Photoelectric-Sensor-21031428-21031428/328119791 Disclaimer: Items are sold AS IS. We include both stock photos and actual photos of the item in hand. Stock images are for reference only please rely on the actual item photos for condition and details. No refunds will be given if you don't review the real photos or preview the item. If cannot preview item due to not being local, you are bidding at your own risk and discretion. Refunds will not be rendered for item inaccuracies or wrong data being input on lots. Experience the next level of fire safety with the Kidde 4-Inch Compact Smoke Detector, AA Battery Powered, model 10SDR. This compact smoke detector has enhanced sensing technology that reduces false alarms often caused by cooking and sends fast alerts that help give your family more time to get out safely. This smoke alarm's 4-Inch design is smaller than the average 5-Inch design and is great for small spaces without sacrificing the key features you need. Comprehensively tested and designed to the latest UL standard for safety and reliability, the smoke alarm is powered by 2 replaceable AA alkaline batteries (included) for continual detection even during outages. The red LED light blinks to indicate the smoke alarm is on and working. When smoke is detected the LED light will flash in time with the loud 85-decibel alarm to help you seek safety. A test-hush button allows you to test the battery operations as well as silence nuisance alarms, should they occur. In addition, it's self-testing and easy to install with the included twist-and-click mounting bracket.

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