Audible Showing all 2 results Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Sort by editor review Added to wishlistRemoved from wishlist 0 Add to compare First Alert Battery Powered Z-Wave Smoke Detector & Carbon Monoxide Alarm, Works with Ring Alarm Base Station, 2nd Generation Added to wishlistRemoved from wishlist 0 Add to compare $46.99 Original price was: $46.99.$35.99Current price is: $35.99. 23% Added to wishlistRemoved from wishlist 0 Add to compare First Alert SCO501CN-3ST Wireless Interconnected Combination Smoke and Carbon Monoxide Alarm with Voice Location, Battery Operated Added to wishlistRemoved from wishlist 0 Add to compare $42.75