The Difference Between Photoelectric and Ionization Smoke Alarms
Ionization Smoke Alarms
Ionization smoke alarms are more responsive to flaming fires. In these alarms, a small amount of radioactive material between two electrically charged plates ionizes the air, causing a current to flow between the plates. When smoke enters the chamber, it interrupts the flow of ions, reducing the current and triggering the alarm. However, these alarms should not be placed near kitchens or bathrooms, as heat and steam can cause them to sound.
Photoelectric Smoke Alarms
Photoelectric smoke alarms are more responsive to smoldering fires. In these alarms, a light is aimed into a sensing chamber but away from the sensor itself. When smoke enters the chamber, it causes the light to be reflected onto the sensor, activating the alarm.
What Type of Smoke Alarm Should You Get?
Because photoelectric and ionization alarms are most effective against different types of fires, the best protection comes from having both in your home. Kidde also offers dual-sensor smoke alarms that contain both ionization and photoelectric sensors in one device.
Need Further Assistance?
If you have any questions or need further assistance, please don't hesitate to contact our customer care team.
They are available to help you with any concerns or inquiries you may have. Reach out to us for support, and we'll be happy to assist you!
Do Hot or Cold Temperatures Affect My Alarm?
Our smoke and carbon monoxide alarms perform between 40 degrees and 100 degrees Fahrenheit.
Effects of Humidity on Smoke Alarms
High humidity levels, steam and condensation may cause false alarms.
Nuisance Smoke Alarms When It's Cold Outside
Nuisance Smoke Alarms When its Cold Outside
What Causes Consistent Chirping?
Learn more about the conditions that could cause your smoke alarm to chirp consistently.
What Causes Intermittent Beeping or Chirping?
Several things could be causing your alarm(s) to alarm briefly or chirp randomly without a regular pattern. Here are some reasons why this could be happening, and how to stop your smoke alarm from beeping.