Smoke /Carbon Monoxide Detector
This is a combo pack from First Alert, which is a carbon monoxide detector with electro-chemical sensor and a smoke alarm with ionization smoke sensor. It is simple to use, has a silence and test button along with a low battery warning, and has a convenient front battery access. It sounds at 85-decibel alarm and has an end-of-life timer. What is includes in the package is smoke alarm, carbon monoxide detector, 2 AA batteries for carbon monoxide detector and a 9v for smoke alarm and a 5-year limited warranty.