Home Smart Home First Alert 2-in-1 Z-Wave Smoke & Carbon Monoxide Detector $35.97 Smart Home First Alert 2-in-1 Z-Wave Smoke & Carbon Monoxide Detector $35.97 By ARCOM - 13 September 2018 185 0 SHARE Facebook Twitter Go to the deal page: First Alert 2-in-1 Z-Wave Smoke & Carbon Monoxide Detector $35.97