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 - 2 August 2018 192 0 SHARE Facebook Twitter Go to the deal page: First Alert 2-in-1 Z-Wave Smoke & Carbon Monoxide Detector $35.97