X-Sense alarm signals: beeps, chirps and lights
The X-Sense XS01-WR is a wireless interlinked smoke alarm with one red LED. The same single red flash every 60 seconds means “all normal” when silent and “battery low” when it comes with a beep, so listen as well as look.
If it is sounding a full alarm: the maker’s emergency instruction
Smoke alarm
X-Sense: never ignore any alarm (XS01-WR manual). Check for signs of smoke or fire; if you see or smell smoke, evacuate immediately and call emergency services. If you are unsure what the hazard is, contact emergency services for guidance.
From Wireless Interlinked Smoke Alarm XS01-WR — User Manual and Smoke Detector Beeps and Sounds Decoded.
The X-Sense alarm on these pages senses smoke only. For a carbon monoxide alarm, follow its own maker’s instruction.
Every X-Sense signal we could source
| What you see | What you hear | What it means |
|---|---|---|
| One red flash about every 60 seconds | Silent | Normal operation: Normal: the red LED flashes once every 60 seconds. |
| One red flash about every second | Full alarm, loud and continuous | Real alarm: Alarm: smoke detected. |
| One red flash about every 5 seconds | Silent | Hush or silence mode: Silence mode: for about 9 minutes after the silence button was pressed during an alarm. |
| One red flash about every 60 seconds | One chirp about every 60 seconds | Low battery: Low battery. |
| Two red flashes about every 40 seconds | Two chirps about every 40 seconds | Fault: The alarm is malfunctioning. |
Sources
X-Sense’s own documents only, read on the date shown.
- X-Sense: Wireless Interlinked Smoke Alarm XS01-WR — User Manual — XS01-WR (UL 217 edition). download.x-sense.com Checked 2026-09-29.
- X-Sense: Smoke Detector Beeps and Sounds Decoded — X-Sense smoke alarms (general guide). www.x-sense.com Checked 2026-09-29.