Home Smart Home First Alert 2-in-1 Z-Wave Smoke & Carbon Monoxide Detector $33.51 Smart Home First Alert 2-in-1 Z-Wave Smoke & Carbon Monoxide Detector $33.51 By ARCOM - 12 April 2018 195 0 SHARE Facebook Twitter Go to the deal page: First Alert 2-in-1 Z-Wave Smoke & Carbon Monoxide Detector $33.51