Nest Protect 2nd Generation Smoke Carbon Monoxide Alarm Battery

The Nest Protect 2nd Generation Smoke CO Alarm that thinks and can detect both fast and slow burning fires. It can alert your phone and tell you where the danger is. You can also silence false alarms with your phone. All this is a new design from the inside out. It has a split spectrum sensor, tests itself automatically and for up to a decade.

The split sensor uses a 450 nm wavelength of light to detect tiny particles created by fast fires. To reduce false alarms, the Split Spectrum Sensor is shielded against outside light, etched to protect it against dust and encased in a stainless steel screen. Nest Protect uses both a humidity sensor and an advanced algorithm to cut false alarms from steam by 50%.

Features & Benefits

• Voice alarms with custom location
• Split Spectrum Sensor
• Detects carbon monoxide
• Up to 10-year product lifetime
• Heads-Up alerts
• Sound Check
• Nightly Promise
• Pathlight
• Steam Check
• Self Test
• Wireless Interconnect
• Emergency Shut-Off with Nest Learning Thermostat
• Emergency clip record with Nest Cam
• Home Report
• Nest App
• Smoke
• Carbon monoxide
• Low battery
• Sensor failure
• App Silence
• Safety Check-up
• Safety history
• What to Do

What's in the box

• Nest Protect (battery)
• Six long-life batteries
• (Energizer Ultimate Lithium L91)
• Back plate
• Four screws
• User's Guide and Welcome Guide