Nest S3004PWBUS - 2nd Generation, Protect Smoke and Carbon Monoxide Alarm, White, 6 Long-Life AA Ultimate Lithium Batteries

Nest S3004PWBUS - Nest Protect 2nd Generation Smoke and Carbon Monoxide Alarm, Battery, White, 6 Long-Life AA Energizer® Ultimate Lithium Batteries2nd Generation Nest ProtectNest Protect uses information from its sensors to detect smoke or CO in your home, test itself, light your way in the dark, and more. Split-Spectrum Sensor:uses two different kinds of light to detect smoke from a wide range of fires, including both fast-flaming and slow smoldering fires, a first for home smoke and CO alarms. Carbon monoxide sensor:detects carbon monoxide (CO), an odorless, colorless and potentially deadly gas. The CO sensor lasts up to 10 years. Heat sensor: enables Nest Protect to detect sudden rises in temperature. Humidity sensor: enables Steam Check. This Nest Protect exclusive feature uses an advanced software algorithm to reduce nuisance alarms caused by things like steam from your shower. Occupancy sensor: detects when you are walking under Nest Protect to turn on Pathlight and light y