Nest Product Generations – How to Identify Your Products

It is well known that electronic technology advances very quickly, with products being outdated and replaced by a newer version every year. More and more frequently these subsequent versions of the same product are being called ‘generations,’ such as a ‘5th gen iPod.’ Nest Labs’ range of ‘smart home’ products is no exception to this trend and the oldest two have already undergone a few iterations of redesign and improvement.

This guide has been written to help you quickly and easily identify which generation your Nest Products belong to.

Nest Protect

1st Generation 2nd Generation
Edges Straight Edges
Nest Protect 1st Generation Edges
Rounded Edges
Nest Protect 2nd Generation Edges
Backplate Square
Nest Protect 1st Generation Backplate
Nest Protect 2nd Generation Backplate
Battery Door No Battery Door
Nest Protect 1st Generation Battery Door
Battery Door
Nest Protect 2nd Generation Battery Door
Serial Number 05A or 05C
Nest Protect 1st Generation Serial Number
06A or 06C
Nest Protect 2nd Generation Serial Number

Model Number

Open the Nest app on your phone and tap Protect at the bottom, tap the Settings gear at the top followed by the alarm you’re interested in, and then go to Technical Info. If it says your model is Topaz-1.x then you have a First Generation, while Topaz-2.x denotes the Second Generation alarm.

Nest Learning Thermostat

2nd Generation 3rd Generation
Colours Stainless Steel Stainless Steel, Copper, Black, White
Appearance Nest Thermostat 2nd Generation Appearance Nest Thermostat 3rd Generation Appearance
  • 7cm screen diameter
  • 320 320px resolution
  • 8.25cm screen diameter
  • 480 x 480px screen
Base Nest Thermostat 2nd Generation Base Nest Thermostat 3rd Generation Base
  • Yellow spirit level
  • Rectangular Display connector
  • Blue spirit level
  • Oval display connector
Heat Link Nest Thermostat 2nd Generation Heat Link Nest Thermostat 3rd Generation Heat Link
  • One status light
  • 10cm height and width
  • 3 status lights
  • 11cm height and width

Nest Cam

Indoor Outdoor
Colour Black White
Appearance Nest Thermostat 2nd Generation Appearance Nest Thermostat 3rd Generation Appearance
  • Securely stream 1080p video to your phone, tablet or laptop
  • Various positioning options
  • No installation – simply plug into power and set up via phone app
  • Compatible with standard camera mounts and tripods
  • Weatherproof camera nad cables
  • Magnetic mount with metal plate for wall attachment
  • Night vision
  • Clear 24/7 video with 130 degree viewing angle