Refurbished Combination Smoke & Carbon Monoxide Detectors — 23 Deals

23 live US listings.

First Alert SMCO100V-AC, Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup and Voice & Location Alerts, 6-Pack

$253⁷⁵

First Alert SMICO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm -Pack 6

$185²⁰

Safe T Alert - Dual LP/CO Alarm - Flush Mount w/Trim Ring White - 25-742-WT-TR

$55⁵⁵

First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup and Voice & Location Alerts, SMCO100V-AC, 3-Pack

$134⁷¹

First Alert SMCO110LED-AC, Hardwire Combination Smoke & Carbon Monoxide Alarm with LED Strobe & 10-Year Battery Backup, 1-Pack

$117¹⁸

First Alert SC5 Battery Smart Smoke & Carbon Monoxide Alarm, SMCO600NV, 1-Pack

$106³²

First Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMICO100, 3-Pack

$97⁴³

First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup, 6-Pack

$223⁹³

First Alert SMICO105-AC, Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with 10-Year Battery Backup, 3-Pack

$137²⁷

First Alert Combination Smoke & Carbon Monoxide Alarm, Battery-Operated Detector with Slim Profile Design, SMCO200, 1-Pack

$27⁹⁹

X-Sense Wireless Interconnected Combination Smoke and Carbon Monoxide Detector, 10-Year Battery Powered Fire and CO Alarm, SC06-W, Pack of 1

$31⁸⁷

New 2025 First Alert SMCO410 Z-Wave Battery-Powered Smoke Detector & Carbon Monoxide Alarm, Works with Ring Alarm Base Station, Single Pack, White

$51⁷⁰

First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack

$36⁹⁹

First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm - 3 Pack

$109³⁷

Safe-T-Alert by MTI Industries 35-742-BR 35 Series Dual LP/CO Alarm - Flush Mount, Brown

$50³⁵

First Alert SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack

$35⁸⁵

First Alert BRK Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMICO100, 1-Pack

$32⁸⁹

First Alert SMCO210V, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Voice & Location Alerts, 1-Pack

$39²²

First Alert SMCO210 Sealed 10-Year Battery Combo Smoke and Carbon Monoxide Detector with Slim Profile Design

$35⁴⁶

BRK Smoke and Carbon Monoxide Detector Combination Alarms, SMI105-AC Smoke Detector Hardwired with 10-Year Battery Backup, 1 Pack

$49⁸⁴

X-Sense 10-Year Battery Combination Smoke Carbon Monoxide Alarm Detector with Large LCD Display, UL 217 & UL 2034 Certified, Standalone Model SC07, 1-Pack

$36⁸⁶

First Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMCO100, 1-Pack,White

$39⁰⁸

No-Drill Mount for Kidde Carbon Monoxide Alarms Replacement Upgrade Battery Back Cover with Lanyard, Portable Design & Quick-Release Bracket (Not Included Kidde Carbon Monoxide Alarms)

$6³⁶