Nice and calm
The screen stays green while it's calm, goes amber as it gets louder, and flashes red with one beep when it stays too loud for a few seconds.
Tap Start, then allow the microphone when asked.
Nice and calm
Roughly in decibels. A phone or cheap microphone is only approximate, so set this by watching: during a break, move it until the screen turns red at the point you would tell the children to quieten down. Right now it reads –.
Stops a dropped bag or a slammed door from setting it off.
Only if you have a real sound meter or phone sound-meter app to compare against: move this until the reading above matches it. Otherwise leave it.
| Day | Times | When |
|---|
Kept on this device only.