First Alert Z-Wave Smoke and Carbon Monoxide Alarm, 3-pack at Costco for $80 – $79.99 By admin | May 1, 2021 7:26 pm EST 0 Comment Costco has First Alert Z-Wave Smoke and Carbon Monoxide Alarm, 3-pack for $79.99https://www.costco.com/first-aler…87243.html