Fire alarms can go off randomly due to several common reasons:
1. **Dust or Insects:** Dust particles or insects can accumulate in the alarm's sensors, triggering false alarms.
2. **Low Batteries:** When the batteries in smoke detectors run low, they may emit intermittent beeps as a warning.
3. **Steam or Cooking Smoke:** Smoke from cooking or steam from showers can set off smoke detectors if they are too close to the kitchen or bathroom.
4. **Temperature Fluctuations:** Rapid changes in temperature can expand or contract the materials within the alarm, leading to false alerts.
Regular maintenance, proper placement, and cleaning can help reduce the likelihood of random fire alarm activations and ensure they function accurately in emergencies.