BRK® SCO500B Combination Smoke and Carbon Monoxide Alarm, Photoelectric Sensor, (2) 1.5 VDC AA Batteries, Audible Alarm/LED Display, 85 dB | State Electric
First Alert PC1210V 1039871 Smoke and Carbon Monoxide Alarm, 85 dB, Alarm: Audible, Electrochemical, Photoelectric Sensor