First Alert HD6135FB BRK Brands Hardwired Heat Alarm with Battery Backup
Initiating Devices: Heat Detectors, CO Detectors, Multi-Sensor Detectors
First Alert 10-Year Battery Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
Honeywell 5800COMBO - Smoke, Heat and CO Detector - Alarm Grid