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The Universal Security Instruments MIC3510SB 3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm provides 10 years of continuous protection against deadly threats in the home. New patented Universal Smoke Sensing Technology provides the benefits of both photoelectric and ionization alarms in one device to protect against fast flaming and slow smoldering fires. This smart alarm also offers protection against the silent killer - carbon monoxide - making it a 3-in-1 detector. The ideal addition for new or replacement installations, this maintenance-free alarm is suitable for houses, apartments and mobile homes in every room.
This 3-in-1 smart alarm utilizes a sealed battery (included) that will never have to be replaced throughout the life of the detector, giving you a decade's worth in peace of mind even in the event of a power outage. Permanent Power also saves money from battery replacements (up to $38.00 over the 10-year life of the alarm), eliminates annoying low battery chirps and helps the environment by reducing environmental waste from disposed batteries. This alarm features microprocessor intelligence to completely eliminate nuisance alarms, a single silence/test button to quiet a non-hazardous alarm and an end-of-service life warning that sounds when it's time to replace the alarm (approximately 10-years from activation).
This USI Combination Alarm conforms to UL217 and UL2034 standards. It is also California State Fire Marshal approved and Federal Housing Authority (FHA) approved to exceed industry standards. The Universal Security Instruments MIC3510SB 3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm comes with a 10-year limited warranty that covers both the alarm and battery.
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Average score based on 85 reviews
- Reviewed: 10/27/2022 by Michael E
3 in 1 replacement
We replaced our smoke detector with a Smoke, Fire, and Carbon Monoxide Alarm with a 10 year sealed battery, great product for a great price👍
- Reviewed: 10/26/2022 by Michael E
3 in 1 replacement
We replaced our smoke detector with a Smoke, Fire, and Carbon Monoxide Alarm with a 10 year sealed battery, great product for a great price👍
- Reviewed: 10/26/2022 by Michael E
3 in 1 replacement
We replaced our smoke detector with a Smoke, Fire, and Carbon Monoxide Alarm with a 10 year sealed battery, great product for a great price👍
- Reviewed: 10/17/2022 by Andrea
Just what I needed!
I was looking for a combo smoke/fire/CO alarm with 10 year sealed battery and found this one on a “best” list. Bought it here as the 6 pack was convenient and reasonably priced. Easy to install.
- Reviewed: 09/26/2022 by Melanie R
3 USI Hallway 3-in-1 Smoke, Fire and Carbon Monoxide Smart Alarm
Love your product. Easy to install and long lasting. Great.
- Reviewed: 09/11/2022 by Stephanie D
Highly satisfied customer
I own an 8ncome property having approximately 20 smoke-carbon units. Done are hard-wired , others not. I intend to continue replacing defunct units with the USI product line. I'm pleased with the value, product line and customer service.
- Reviewed: 08/15/2022 by Corey F
So far so good
Easy to install. No issues to date. The unit tested correctly for both Smoke and Co2
- Reviewed: 05/19/2022 by Brenda H
Great
Purchase, shipment, arrival=everything was great
- Reviewed: 05/05/2022 by Daniel E
Works fine easy to install
Instructions were easy, no battery changing is nice, and install was relatively easy. I'll probably be buying a second one.
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- Reviewed: 03/02/2022 by Don M
So far so good
Easy to install. Pull tab to activate is convenient. Purchased because this is one of the few 3 in 1 alarms available photoelectric for smoldering fires, ionization for flaming fires, and carbon monoxide, and it was recommended by Consumer Reports.