Kidde Nighthawk Carbon Monoxide Detector, AC-Plug-in with Battery Backup, Digital Display & Smoke Detector, Battery Powered, Smoke Alarm

• Product 1: Protects during a power failure - carbon monoxide alarm contains a 9V battery backup in case of plug-in failure Product 1: Easy installation - plug can be installed in any outlet of your home. or use the attached extension cord to place on a table or shelf Product 1: Peace of mind - when CO detection is normal, a red dot appears in the lower right corner & blinks. includes a test button Product 1: Electrochemical sensing technology - CO alarm detects the presence of carbon monoxide gas, 85 decibel alarm & memory storage Product 2: Ionization sensing technology - hardwired smoke detector detects invisible fire particles, 85 decibel alarm alerts of fire Product 2: Protects during a power failure - smoke alarm operates on one, 9-volt battery in the back of the unit Product 2: Whole home family protection - place 1 fire detector on each level of your home & in your bedroom Product 2: Test-Hush Feature - silences the unit for approximately 7 minutes