BRK SC7010B AC 120 Volt Combo Smoke/Carbon Monoxide Alarm | NorthEast Electrical
First Alert Brk Hardwired Combination Smoke and Carbon Monoxide Detector with Voice Alert in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
First Alert HD6135FB BRK Brands Hardwired Heat Alarm with Battery Backup