Home Slickdeals First Alert 2-In-1 Z-Wave Smoke Detector & Carbon Monoxide Alarm $33.51 +... Slickdeals First Alert 2-In-1 Z-Wave Smoke Detector & Carbon Monoxide Alarm $33.51 + Amazon Free S/H By ARCOM - 11 April 2018 171 0 SHARE Facebook Twitter Go to the deal page: First Alert 2-In-1 Z-Wave Smoke Detector & Carbon Monoxide Alarm $33.51 + Amazon Free S/H