Google Nest Protect 2nd Gen Smoke and Carbon Monoxide Alarm, Battery 2PK (S3000BWEF-K) - Newegg.ca
Nest 3rd Generation Learning Thermostat + Nest Protect Smoke & CO2 Alarm (2nd Generation) Bundle (249090) | City Plumbing
Google Nest Learning Thermostat 3rd Generation - Works with Google Assistant and Alexa - Stainless Steel | Dell USA
Google Nest Protect Smart Smoke and Carbon Monoxide Detector Alarm (Battery) in the Combination Smoke & Carbon Monoxide Detectors department at Lowes.com
Google Nest Learning Smart Wifi Thermostat Stainless Steel T3007ES - Best Buy
Nest Protect Teardown - iFixit
Nest Thermostat Teardown - SparkFun Learn
Nest Protect - Smart Smoke & CO Alarm - Google Store