On the covered Google Nest Protect alarm, a pulsing green ring at night means normal. Google says Protect constantly monitors its sensors, batteries and Wi-Fi, and each night when the lights are off it glows green to show everything is working. First, nothing is wrong when the ring glows green.
Differential
Likely causes of “Google Nest Protect alarm showing a pulsing green ring at night”, and how to tell them apart
- 1
Normal nightly check
What separates it A green glow when the lights go off
How to confirm Nothing is wrong
- 2
The Nightly Promise feature
What separates it The ring glows green at night
How to confirm Turn it off in the Nest app if you prefer
- 3
The room not dark enough
What separates it No glow at night
How to confirm Turn the lights on for thirty seconds, then off
- 4
Mistaking it for an alarm
What separates it A green ring is calm
How to confirm A green ring is never an alarm
- 5
A different message
What separates it The ring is yellow or red
How to confirm Read the color in Google's guide
Before you touch a setting
Record this first — changing settings destroys the evidence
- The color of the ring
- Whether lights were off
- Whether the Nest app shows an alert
- The model of Protect
Try in this order
0 of 8 completedWhat to do first
ReversibleNothing is wrong when the ring glows green.
Correct only the documented fault domain
ReversibleGoogle says the nightly green light can be turned off in the Nest app, and Protect will still self-test. If Protect does not glow green or yellow at night, the room may not be dark enough: turn the room lights on for at least 30 seconds, then off again.
Look at the color
ReversibleGreen means working.
Wait for the glow to end
ReversibleIt is brief.
Turn it off if you wish
ReversibleIn the Nest app.
Test in a dark room
ReversibleIf you see no glow.
Run a test
ReversibleFrom the app.
Contact Google
ReversibleIf the status looks wrong.
Model-specific
What is true of this model and not of its siblings
- Nightly Promise
- Google says Protect constantly monitors its sensors, batteries and Wi-Fi, and each night when the lights are off it glows green to show everything is working. It is a reassurance, not a warning.
- Turning it off
- The nightly green light can be turned off in the Nest app, and Protect will still self-test.
- No glow
- If Protect does not glow green or yellow at night, the room may not be dark enough: turn the room lights on for at least thirty seconds, then off again.
Stop boundary
When this stops being a self-service repair
- !Nothing is wrong when the ring glows green
- !If it does not glow green or yellow at night, check the room is dark
- !Treat red as an emergency
Evidence ledger
Sources behind this answer
Exact questions
Common questions
What does a pulsing green ring at night mean on a Google Nest Protect alarm?+
Normal. Google says Protect constantly monitors its sensors, batteries and Wi-Fi, and each night when the lights are off it glows green to show everything is working.
Why does my Protect glow green at night?+
Google says it shows everything is working.
Can I turn it off?+
Yes, in the Nest app.
Will it still self-test?+
Yes.
Why no glow?+
The room may not be dark enough.