First Alert 2-Pack Battery-Operated Carbon Monoxide Detector Item #70010 Model #63946822 500 in Shaft Extension: 3

500 in Shaft Extension: 3

A removable and washable dust screen is included for easy cleaning

When used with iPhone 14 Pro /13 Pro

This durable

First Alert 2-Pack Battery-Operated Carbon Monoxide Detector Item #70010 Model #63946822 500 in Shaft Extension: 3The First Alert CO400 carbon monoxide alarm uses an electrochemical sensor the most accurate technology available. The permanent sensor lasts up to 5 years. It is powered by a 9V replaceable battery giving you peace of mind even during power outages. The test silence button silences the alarm and allows you to test its functionality. The unit monitors and re alarms if carbon monoxide level persist sounding a loud 85 decibel horn. No installation is