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🚨 Stay ahead of danger with smart, connected protection!
The First Alert SMICO100-AC is a 3-pack of hardwired combination smoke and carbon monoxide alarms featuring advanced Precision Detection technology to minimize false alarms. Designed for easy installation with a Quick Connect Plug and interconnect capability, these alarms provide comprehensive early warning throughout your home. Battery backup ensures continuous protection during outages, while a test/silence button offers convenient maintenance.











| ASIN | B0CLVQF7MC |
| Item model number | SMICO100-AC |
| Manufacturer | Resideo |
| Product Dimensions | 54.61 x 19.05 x 8.89 cm; 762.04 g |
H**R
All three of our alarms gave the warning beeps within days of one another. They were finishing warranty also. I was glad to find these with three alarms. Many I had interest in were in two only. Then I’d need two pkgs with an extra one not needed. Others way beyond our senior budget. These arrived on time, safely packed and exactly as described. Our son got them up quickly and easily and we’ve had no trouble with them at all. We recommend them.
T**H
good quality, as described, easy hookup
C**T
Excellent for the price easy to install would buy again exactly what's described comes with batteries hardwired would not hesitate to buy again excellent deal
D**B
While First Alert lists SMICO100-AC as direct replacement for the discontinued 9120B, it is NOT the same size and will NOT fit existing 9120B mounting rings. While they appear to be the same, the newer model is (strangely) a fraction of an inch larger around. Changing mounting rings is easy, but will be required. The new mounting rings are larger inner diameter, smaller outer diameter, so will not cover ceiling covered by the older mount. Plug is compatible and units appear to work as advertised. This would easily have been 5 star, I have NO idea why they didn't make the mounting match!
C**H
Well worth it. We have 9 of them in our home and have replaced them all
Trustpilot
1 week ago
2 weeks ago