This Protect Battery Smoke and Carbon Monoxide Detector from Nest is the ultimate smoke alarm for your home. Redesigned from the inside out, it has an industrial-grade smoke sensor, can be hushed from your phone, tests itself automatically and lasts for up to 10-year. It also tells you what's wrong so you know what to do and where to go and can even conveniently alert your phone in the event of an unforeseen event. Its super-efficient sensor detects both fast and slow burning fires.

• Sends alerts to your phone in case you aren't home
• Split-spectrum sensor detects fast and slow burning fires
• Can be easily and immediately silenced from your phone
• Easily detects the location and cause of the problem
• Keeps your home safe and sound for up to 10-year
• Detects the colorless and odorless carbon monoxide to keep your family safe in the event of leaks
• Easily check the status in the Nest application
• When you walk underneath it at night, path light will light your way
• Emits a green glow when you turn off the lights