First Alert 10-Year Battery Hardwired Combination Smoke and Carbon Monoxide Detector in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
Kidde Code One Smoke & Carbon Monoxide Detector, Hardwired with AA Battery Backup & Voice Alarm 21027519 - The Home Depot
Sensing Plus AMIC1510SB Hardwired Combo Smoke & Carbon Monoxide Alarm | Universal Security Store