Installing the 2nd generation Google Nest Protect Smoke and Carbon Monoxide Alarm in your home will provide you with unparalleled peace of mind. The Nest Protect allows you to monitor and control your home’s smoke detectors from your smartphone, and silence your smoke detector with a single tap if you know everything is okay. You can easily see the status of your Nest Protect with a quick glance at the LED indicator ring; your Nest will glow red for Emergency, yellow for Head’s Up, and green to show that your Nest Protects have tested themselves and everything is working. Additionally, Nest Protect is the only alarm with Steam Check; it uses custom algorithms and a humidity sensor to look for steam, so you can enjoy a nice, quiet shower. Nest Protect Features Power: Wired Automatic Tests: Yes, 400 x per day Voice Commands: Yes Phone Alerts: Yes Sound/Motion Detection: Yes Pathlight: Yes, lights up as you walk underneath Google Assistant Built-in