![USI 3-in-1 Smoke, Photoelectric and Ionization Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery, 85 Decibels - Walmart.com USI 3-in-1 Smoke, Photoelectric and Ionization Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery, 85 Decibels - Walmart.com](https://i5.walmartimages.com/asr/b441362b-5b18-489b-8175-2a88645aaa6c.fd20ef5d7177e8b57be0f0381e85df13.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
USI 3-in-1 Smoke, Photoelectric and Ionization Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery, 85 Decibels - Walmart.com
![City Of Lynn Fire Dept. on X: "Day 3 - #FirePreventionWeek "Learn the Sounds of Fire Safety" * Beeping - Three continuous beeps means there is a fire emergency. Four quick beeps City Of Lynn Fire Dept. on X: "Day 3 - #FirePreventionWeek "Learn the Sounds of Fire Safety" * Beeping - Three continuous beeps means there is a fire emergency. Four quick beeps](https://pbs.twimg.com/media/FA777DoX0AIdaXY.jpg)
City Of Lynn Fire Dept. on X: "Day 3 - #FirePreventionWeek "Learn the Sounds of Fire Safety" * Beeping - Three continuous beeps means there is a fire emergency. Four quick beeps
![City of Carlsbad on X: "Do you know the difference between a smoke alarm and carbon monoxide alarm? 3️⃣short beeps means smoke or fire. 4️⃣short beeps means carbon monoxide is detected. Either City of Carlsbad on X: "Do you know the difference between a smoke alarm and carbon monoxide alarm? 3️⃣short beeps means smoke or fire. 4️⃣short beeps means carbon monoxide is detected. Either](https://pbs.twimg.com/media/FBCc_TkWQAMLnWD.jpg:large)
City of Carlsbad on X: "Do you know the difference between a smoke alarm and carbon monoxide alarm? 3️⃣short beeps means smoke or fire. 4️⃣short beeps means carbon monoxide is detected. Either
My ceiling mounted smoke detector is beeping at 3 am and I can't sleep. How can I replace the battery if I don't have a ladder to reach the 10ft ceiling? -
![FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 3-Pack , White - Amazon.com FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 3-Pack , White - Amazon.com](https://m.media-amazon.com/images/I/715UhOnphWL.jpg)