Home Columbus Day First Alert 2-in-1 Z-Wave Smoke Detector & Carbon Monoxide Alarm $33.14 Columbus Day First Alert 2-in-1 Z-Wave Smoke Detector & Carbon Monoxide Alarm $33.14 By ARCOM - 19 September 2017 257 0 SHARE Facebook Twitter Go to the deal page: First Alert 2-in-1 Z-Wave Smoke Detector & Carbon Monoxide Alarm $33.14