What Does the Nest 2nd Generation Do? Exploring Key Features

What does the Nest 2nd generation do: With advancements in smart home technology, the Nest Protect Gen 2 offers a range of features designed to enhance your home’s security and provide peace of mind. In this article, we will delve into the key features of the Nest 2nd generation, discuss its release date and explore the security and privacy features it offers.

What Does the Nest 2nd Generation Do? Exploring Key Features, Release Date, and More

Key Takeaways

  • The Nest 2nd generation, or Nest Protect Gen 2, is a smart smoke and carbon monoxide alarm system with advanced features.
  • It incorporates a split-spectrum sensor for detecting fast and slow-burning fires, providing early warnings.
  • Voice alerts and a built-in pathlight enhance the user experience during emergencies.
  • Smartphone integration allows for real-time notifications and remote monitoring of alarms.
  • Regular self-testing ensures the Nest 2nd generation is functioning correctly and provides peace of mind.
  • The Nest 2nd generation was released in 2015 and has become a trusted choice for homeowners.
  • While the Nest Gen 3 offers additional features and compatibility, the Nest 2nd generation remains a reliable option for home safety

Evolution of Nest Thermostats

The journey of Nest thermostats began with the vision of creating a device that not only regulated the temperature of a home but also learned from user behaviors and adapted accordingly. 

The 2nd Generation Nest thermostat represents a significant advancement from its predecessor, incorporating refined features and improved functionality to provide an enhanced user experience. 

What Does the Nest 2nd Generation Do?

The Nest 2nd generation, also known as the Nest Protect Gen 2, is a smart smoke and carbon monoxide alarm system that goes beyond the capabilities of traditional detectors. It offers several noteworthy features, including:

1. Split-Spectrum Sensor: 

The Nest 2nd generation is equipped with a split-spectrum sensor that can detect both fast and slow-burning fires. This advanced sensor helps provide early warnings in the event of a potential fire hazard.

2. Voice Alerts and Pathlight: 

Unlike conventional detectors, the Nest Protect Gen 2 features a built-in speaker that can audibly alert you in case of emergencies. 

It also has a path light that illuminates your way at night, making it easier to navigate your home during an alarm.

3. Smartphone Integration: 

By connecting the Nest 2nd generation to your smartphone, you can receive real-time notifications and alerts directly to your device. This enables you to stay informed about potential hazards, even when you’re away from home.

4. Self-Testing and Monitoring: 

The Nest Protect Gen 2 performs regular self-tests to ensure it’s functioning correctly. 

It also offers monitoring features that allow you to check the status of your alarms and batteries remotely, ensuring your home’s safety is always a priority. 

When Did Nest Protect Gen 2 Come Out?

The Nest Protect 2nd generation was released in the year 2015. Since then, it has become a trusted choice for homeowners seeking reliable and intelligent smoke and carbon monoxide detection. 

What is the Model Number of Nest Protect 2nd Generation?

The model number associated with the Nest Protect 2nd generation is commonly referred to as “Nest Protect (Wired 120V)” or “Nest Protect (Battery-Powered).” 

These model numbers help differentiate between the wired and battery-powered versions of the device. 

Difference Between Nest Gen 2 and Gen 3

Difference Between Nest Gen 2 and Gen 3

While the Nest Protect Gen 2 offers excellent functionality and protection, the Nest Gen 3 takes it a step further with a few additional features. Here are some differences between the two generations:

1. Design: 

In terms of design, the Nest 2nd Generation thermostat features a round shape with a smaller display compared to the Nest 3rd Generation. 

The 3rd Generation has a larger, higher-resolution display with a sharper and more vibrant interface. It also offers a sleeker profile, making it visually appealing and modern.

2. Display Compatibility: 

The Nest 2nd Generation has limited compatibility with some older HVAC systems due to its display voltage requirements. On the other hand, the Nest 3rd Generation has improved compatibility, addressing this issue and ensuring compatibility with a wider range of HVAC systems.

3. Farsight Feature: 

The Nest 3rd Generation introduced the Farsight feature, which enables the thermostat to display information, such as temperature or time, from a distance. 

This feature utilizes sensors to detect movement and activate the display, providing convenient visibility from across the room. The Nest 2nd Generation does not include the Farsight feature.

4. Sensors: 

The Nest 3rd Generation comes equipped with additional sensors compared to the Nest 2nd Generation. It includes a humidity sensor, in addition to temperature, proximity, and ambient light sensors.

These sensors enhance the thermostat’s ability to provide more accurate readings and optimize the indoor environment.

5. Compatibility with HVAC Systems: 

While both generations are compatible with the majority of heating and cooling systems. 

The Nest 3rd Generation offers enhanced compatibility with two-stage cooling and heating systems, as well as heat pump systems with auxiliary and emergency heat. 

This broader compatibility allows the Nest 3rd Generation to work seamlessly with a wider range of HVAC setups.

6. Energy-Saving Features: 

The Nest 2nd Generation and Nest 3rd Generation thermostats both offer energy-saving features, such as learning capabilities and schedule optimization. 

However, the Nest 3rd Generation incorporates advanced algorithms that further refine its energy-saving capabilities.

7. Price: 

Generally, the Nest 3rd Generation is priced higher than the Nest 2nd Generation due to its updated design, improved display, and additional features. However, pricing may vary based on region and retailer. 

Does Google Nest 2nd Gen Have a Camera?

No, the Nest 2nd generation does not have a built-in camera. Its primary function is to detect smoke and carbon monoxide, providing crucial safety measures for your home. 

What is the Latest Generation of Nest?

As of the time of writing, the latest generation of the Nest Protect is the Nest Protect Gen 3. It builds upon the features of the previous generations and offers additional improvements for enhanced safety and convenience. 


The Nest 2nd generation, also known as the Nest Protect Gen 2, is a reliable and advanced smart smoke and carbon monoxide alarm system. 

With its split-spectrum sensor, voice alerts, smartphone integration, and self-testing capabilities, it provides homeowners with an elevated level of security and peace of mind.

Although the Nest Gen 3 offers a few additional features, the Nest 2nd generation remains a powerful choice for protecting your home from potential fire hazards. 

Invest in the Nest 2nd generation and take proactive steps towards safeguarding your property and loved ones.

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