Nest Protect
Nest Protect is a smart smoke and carbon monoxide detector designed to provide early warnings, clear alerts, and connected safety monitoring throughout your home.
Using spoken alerts, app notifications, and self-checking diagnostics, it helps you understand what is happening and where. Integrated with Google Home, Nest Protect adds visibility and peace of mind beyond traditional alarms.
Specifications
Dimensions
Length: 5.3 in (13.4 cm)
Width: 1.6 in (3.95 cm)
Height: 5.3 in (13.4 cm)
Weight
Nest Protect Battery: 13.9 oz (379.0 g)
Nest Protect Wired: 13.2 oz (375.0 g)
Color
White
Sensors
·Split‑Spectrum smoke sensor
·Electrochemical carbon monoxide sensor (Nest Protect’s sensor lasts up to 10 years from the date of manufacture.)
·Temperature
·Humidity
·Occupancy (120° field of view up to 20 feet)
·Ambient light
·Accelerometer
Battery
Six long-life AA batteries · Battery model: Six long-life AA batteries (Energizer® Ultimate Lithium “L91”) · Wired model: Three long-life backup AA batteries (Energizer® Ultimate Lithium “L91”)
Wireless
·802.11b/g/n (2.4GHz) Wi-Fi
·802.15.4 (2.4GHz)
·Bluetooth Low Energy
Operating Temperature
40ºF (4 ºC) to 100ºF (38 ºC)
Audio
·80 dB @ 3 ft (1 m) @ 1kHz
·Speaker loudness: 80 dB @ 3 ft (1 m) @ 1kHz
·Horn – 85 dB SPL @ 10 ft (3 m)
Certification
·Complies with safety standards set out by UL
·Nest Protect has been tested to comply with safety standards UL 2034, UL 217, and NFPA-72 set out by UL and California State Fire Marshal.
External Buttons
RGB color ring with 6 LEDs
User Manual
N/A
Technologies & Capabilities
Smoke & Carbon Monoxide Detection
Nest Protect monitors for both smoke and carbon monoxide, providing early alerts before conditions become dangerous.
Voice Alerts With Clear Warnings
Instead of loud alarms alone, the detector uses spoken alerts to explain what type of hazard is detected and which room is affected.
Self-Testing & Status Monitoring
Automatic self-checks verify sensors, batteries, and connectivity, with status updates available in the Google Home app.
Smart Alerts & App Notifications
When an issue occurs, alerts are sent to your phone so you stay informed even when you are away from home.
Frequently Asked Questions
What does Nest Protect detect?
It detects smoke and carbon monoxide, providing alerts through audible warnings and mobile notifications.
Does Nest Protect require Wi-Fi?
Wi-Fi is required for app notifications, remote alerts, and status updates. Core alarm functions continue locally without internet.
Can I silence alerts from my phone?
Yes. The Google Home app allows you to silence certain alerts remotely when it is safe to do so.
Is the Nest Protect available in battery & wired versions?
Yes. It is available as a battery-powered model and a wired model with battery backup.
Does Nest Protect integrate with other smart devices?
Yes. It integrates with Google Home and can interact with compatible smart lights and routines for additional safety responses.