Radon monitor
Radon is invisible, and the number is the only way to know
No smell, no colour, no taste. The detector is the only warning there is. Incidents rise through heating season, as furnaces, fireplaces and generators come back into use - which is exactly when it is worth knowing yours works.
What to do
- Press the test button. You should hear a beep and see the display respond.
- A blank display means the unit is dead, not asleep.
- Check the replacement date - most units last five to ten years.
- If the alarm sounds, get everyone outside into fresh air first, then call 911.
- Test twice a year, and again before heating season starts.
| Category | Detection & monitoring |
|---|---|
| Where | In-home device |
In an emergency, always call 911.
Also in detection & monitoring
Smoke detector
Ten years from the date on the back, not the day you installed it
Is there one of these near you?
A ResQ‑R badge on one of these carries this same guidance, plus where that particular one is and who looks after it. Point your phone’s camera at the Dalmatian’s spots — no app, no account. See how it works.