What is the Difference Between Ionization and Photoelectric Smoke Alarms?

There are two main types of smoke alarms – ionization and photoelectric. Learning the difference can help you make the best choice for home or business.
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FIRST ALERT SA320CN 100076432

USI Hardwired Ionization Smoke and Fire Detector with Battery Backup - 5304

Smoke Alarms: Photoelectric or Ionization

Ionization Vs Photoelectric Smoke Alarms - Better Option

Ionization vs. Photoelectric Smoke Alarms

Ionization vs. Photoelectric Smoke Alarms, HomesMSP

Your How-To Guide on Home Smoke Alarm Safety

First Alert Hard-Wired w/Battery Back-up Ionization/Photoelectric Dual Sensor Smoke Detector - Ace Hardware

While all smoke alarms are designed to detect smoke, different sensing technologies react differently to certain types of fires. The Fist Alert SA3210

First Alert Dual Sensor Photoelectric/Ionization Smoke and Fire Alarm with 10-Year Sealed Battery - SA3210 (1039842)

Photoelectric Smoke Alarms

Ionization vs. Photoelectric smoke alarms