First Alert 10 Year Smoke & Carbon Monoxide Alarm 2 pk

Low-Profile Smoke and Carbon Monoxide Alarm
Talking Alarm Says the Type and Location of Detected Threat
Slim, Easy-to-Install Design is Half as Thick as Standard Alarms
Built-in 10-year Battery Offers Continuous Power for the Life of the Detector
Photoelectric Smoke Sensor and an Electrochemical CO senso