Google Nest Protect (Battery) vs Google Nest Protect (Wired)

The Google Nest Protect (Wired) is the better overall pick, coming in ahead on price while offering the same smoke and CO detection, spoken early warnings and self-testing as the Google Nest Protect (Battery). The battery version remains a strong choice for rooms without existing alarm wiring.

The only meaningful difference is power. The Google Nest Protect (Wired) runs on house wiring with a 3 AA battery backup so you avoid routine battery changes, while the Google Nest Protect (Battery) runs on 6 AA batteries and needs no wiring at all. Smoke and CO detection, spoken early warnings, self-test, pathlight and Steam Check are the same on both.

Yes. Both the Google Nest Protect (Wired) and the Google Nest Protect (Battery) detect smoke and carbon monoxide, run self-tests hundreds of times a day, offer an automatic pathlight, and use Steam Check to reduce cooking and shower false alarms. They share the same sensor suite and app features.

Both are managed through the Nest app and work with Google Home and Home Assistant. Neither the Google Nest Protect (Wired) nor the Google Nest Protect (Battery) supports Amazon Alexa, Apple HomeKit, Samsung SmartThings or Matter.

Buy the Google Nest Protect (Wired) if your home already has hardwired alarm wiring and you want the better value option that also spares you routine battery changes, relying only on its 3 AA battery backup for outages.

Buy the Google Nest Protect (Battery) if you want to place the alarm anywhere without running house wiring, for example in an older home or a room with no alarm circuit, and you do not mind swapping 6 AA batteries every couple of years.