Home Slickdeals First Alert 2-in-1 Z-Wave Smoke Detector & Carbon Monoxide Alarm – $33.99... Slickdeals First Alert 2-in-1 Z-Wave Smoke Detector & Carbon Monoxide Alarm – $33.99 + Free Shipping @ amazon.com By ARCOM - 18 October 2017 204 0 SHARE Facebook Twitter Go to the deal page: First Alert 2-in-1 Z-Wave Smoke Detector & Carbon Monoxide Alarm – $33.99 + Free Shipping @ amazon.com