Nest Protect 2nd Gen Black Friday Deals 2026: Best Offers

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Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm is a connected smoke and carbon monoxide alarm with spoken warnings, phone notifications, and wired or battery-powered options. For Black Friday 2026, shoppers should compare the exact version, seller, and package contents rather than relying on a listing headline alone. I researched and compared specs, reviews, and owner feedback to explain what matters when choosing the alarm and evaluating an offer.

The strongest reason to consider Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm is its combination of two types of hazard detection with room-specific voice alerts. The alarm also supports app notifications and routine self-checks. The Best bet is to match the power version to the existing alarm wiring, then check compatibility and return terms before checkout. A bundle is useful only when its additional units fit the home’s layout and installation needs.

How We Picked

• Compared smoke and carbon monoxide detection features, including the Split-Spectrum Sensor and electrochemical CO sensing.
• Reviewed alert options, including spoken room details, app notifications, and the Heads-Up warning before an emergency alarm.
• Checked the practical differences between the wired version with backup batteries and the battery-powered version.
• Considered owner feedback, retailer listing clarity, package contents, seller information, and return policies for deal comparisons.

Our Verdict

#1 · Top pick

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm

The Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm is a feature-rich connected alarm for homes that want smoke and CO detection, spoken alerts, and phone notifications in one device. Compare the wiring version and listing details before buying.

Best for: Homes seeking connected smoke and CO alerts with room-specific voice warnings

Generation

2nd generation

Detection

Smoke and carbon monoxide

Smoke sensor

Split-Spectrum Sensor

Wired power

120-volt hardwiring with 3 AA backup batteries

Battery power

6 AA batteries

Wireless

Wi-Fi on 2.4 GHz and 5 GHz networks

Pros

• Combines smoke and carbon monoxide detection in one alarm.
• Spoken alerts identify the hazard and the room.
• Sends phone notifications through the Nest app when connected.
• Offers wired and battery-powered versions for different installations.

Cons

• App notifications and connected features depend on a working Wi-Fi connection.
• Wired and battery listings have different installation and power requirements.

Is the Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm worth buying on Black Friday 2026?

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm is worth considering when connected notifications, spoken room alerts, and combined smoke and CO detection are priorities. Black Friday shoppers should compare the power version, seller, package contents, and return terms before choosing a listing.

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What does Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm do?

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm detects smoke and carbon monoxide, then communicates warnings through its speaker and connected app. The device uses a Split-Spectrum Sensor for smoke detection and an electrochemical sensor for carbon monoxide.

The Heads-Up alert gives an earlier spoken warning for certain smoke or carbon monoxide events, while the Emergency Alarm signals a more serious condition. Spoken alerts identify the type of warning and the room name assigned during setup, helping people understand where to respond. Phone notifications add another way to receive alerts when the alarm is connected to Wi-Fi.

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm also performs routine checks of key alarm functions. Those connected and voice features complement, rather than replace, proper placement and compliance with local fire-safety requirements. Read the installation instructions and consult a qualified professional when the home’s wiring or placement requirements are unclear.

Which Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm version should I buy?

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm comes in wired and battery-powered versions, so the right choice depends on the installation location. The wired version connects to 120-volt household wiring and includes three AA backup batteries; the battery version uses six AA batteries.

For an existing hardwired alarm location, confirm that the listing is the wired version and that the installation matches the home’s electrical setup. Existing wiring does not guarantee that a replacement is a straightforward fit, so follow the manufacturer’s instructions and local requirements. For a location without alarm wiring, the battery version avoids a hardwired connection, but buyers still need to plan for battery replacement.

Black Friday listings can make the power type easy to overlook, especially when product photos show both versions. Check the model details and package contents before ordering. A two-pack is not a better deal for every home: map the required alarm locations first and buy only the quantity that suits the layout.

How do alerts and app features work?

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm uses spoken warnings, an audible alarm, and Nest app notifications to communicate smoke or CO events. The spoken alert names the room and the type of hazard when the alarm has been set up with room information.

App notifications require the alarm to be configured with a compatible Wi-Fi network and the Nest app. A phone alert is an additional notification channel, not a substitute for the alarm’s local sound or for an emergency response. Keep the app and account access available to the household members who need alerts, and review notification permissions on their phones.

The alarm also provides a Pathlight feature that illuminates when someone moves beneath it in low light. Connected functions depend on the network and account setup, so confirm the app experience and device compatibility that apply to your home before buying. For safety, follow the manufacturer’s instructions for testing and maintenance.

What should I check in Nest Protect Black Friday 2026 deals?

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm Black Friday 2026 listings deserve a careful check of power type, seller, package count, and return terms. The device’s main differences between listings often matter more than a promotional headline.

Start by confirming whether the listing is wired or battery-powered and whether it is a single alarm or a multi-unit package. Check the exact product name, condition, included batteries or hardware, shipping details, and who handles the return. A marketplace listing should identify the seller clearly; a familiar retailer name alone does not establish who fulfills the order.

Look at color availability and stock for the exact version you need, then compare the final listing terms across retailers. Avoid choosing a bundle before deciding how many alarms your home needs. The Best bet is a clearly described, correctly powered unit from a seller with straightforward returns and a product page that matches the item delivered.

Does Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm work without Wi-Fi?

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm retains its core local alarm function without Wi-Fi, but connected phone notifications require a network connection. The device’s smoke and carbon monoxide alarm signals operate at the unit, so a network outage does not remove the need to hear and respond to its local warning.

Wi-Fi supports setup and connected features such as app alerts. If the household’s internet or wireless network is unavailable, do not count on receiving a phone notification for an alarm event. Make sure people in the home can hear the local alarm, and follow the manufacturer’s instructions for managing the device and its warning signals.

For shoppers comparing listings, wireless compatibility is separate from power type: the battery version still needs a compatible network for app features, and the wired version also uses Wi-Fi for connected functions. Confirm network requirements and app setup before purchase, especially if the alarm will be installed far from the router.

How long does Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm last?

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm has a stated 10-year service life, after which the alarm needs replacement according to the manufacturer’s instructions. The product’s end-of-life warning helps owners know when the unit has reached its replacement point.

The battery-powered version uses six AA batteries, while the wired version has three AA backup batteries in addition to household wiring. Battery replacement needs and notices depend on the version and device condition. Check the alarm’s status and follow the instructions that apply to the particular unit rather than assuming every listing includes the same power accessories.

Before buying on Black Friday, review the condition and return policy, especially for marketplace inventory. Check the manufacture or end-of-life information supplied with the unit and make sure the product is suitable for the intended installation. Proper placement, maintenance, and timely replacement remain important for any smoke and carbon monoxide alarm.

Buying Guide

Match the power version to the installation

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm should match the wiring and power plan for its location. Choose the wired listing for a suitable hardwired setup or the battery listing where a battery-powered alarm is needed. Verify the exact version before checkout.

Compare the full listing, not just the headline

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm Black Friday listings should be checked for seller, product condition, quantity, color, included accessories, shipping, and return rules. Confirm the product page describes the exact version being purchased.

Plan how many alarms your home needs

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm packages should fit the home’s layout and local safety requirements. Identify the intended alarm locations before considering multi-unit bundles, and consult a qualified professional about placement or wiring questions.

Check connectivity and app access

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm needs compatible Wi-Fi and Nest app setup for connected phone notifications. Review the network requirements, app access, and account setup that apply to your household before relying on remote alerts.

Alternatives to Consider

• First Alert Onelink Safe & Sound Smoke and Carbon Monoxide Alarm: Choose First Alert Onelink Safe & Sound Smoke and Carbon Monoxide Alarm if you want a connected smoke and CO alarm that also includes a speaker and voice-assistant features. Check its current compatibility and installation requirements against your home setup.
• Kidde Smart Smoke and Carbon Monoxide Alarm: Kidde Smart Smoke and Carbon Monoxide Alarm is an alternative for shoppers who want a connected alarm from a different established safety brand. Compare the exact model’s app features, power setup, and compatibility before choosing it instead.
• X-Sense XS0B-MR Smart Smoke and Carbon Monoxide Alarm: Consider X-Sense XS0B-MR Smart Smoke and Carbon Monoxide Alarm if app-connected smoke and CO monitoring is the priority and you are comparing another smart-alarm system. Review hub requirements and the included components on the specific listing.

FAQ

Does Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm detect both smoke and carbon monoxide?

Yes. Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm combines smoke detection with carbon monoxide detection in one device. Its spoken alerts identify the kind of warning and assigned room. Follow the product instructions for installation, maintenance, and responding to an alarm.

Is Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm wired or battery-powered?

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm is available in wired and battery-powered versions. The wired version uses 120-volt household wiring and three AA backup batteries; the battery version uses six AA batteries. Confirm the exact version on the listing.

Does Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm send phone alerts?

Yes. Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm can send phone notifications through the Nest app when configured with a compatible Wi-Fi connection. Phone alerts supplement the alarm’s local sound and do not replace it or an appropriate emergency response.

Does Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm work without Wi-Fi?

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm can sound its local alarm without Wi-Fi, while connected phone notifications require a network connection. Keep the device installed and maintained as instructed, and make sure household members can hear its local warnings.

What should I look for in Google Nest Protect Black Friday 2026 deals?

For Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm, check wired or battery power, seller identity, package quantity, condition, color, included items, and return terms. Confirm that the listing details match the version and number of alarms your home needs.

How long does Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm last?

Google Nest Protect (2nd Gen) Smoke and Carbon Monoxide Alarm has a stated 10-year service life. Follow the unit’s end-of-life warnings and the manufacturer’s replacement instructions. Check the product condition and available end-of-life information when evaluating a retailer or marketplace listing.