SA320CN Ultimate Protection Smoke Alarm, Battery-Powered


SA320CN Ultimate Protection Smoke Alarm, Battery-Powered



The First Alert Ultimate Protection Smoke and Fire Alarm provides an early warning. The intelligent sensing technology in this fire alarm is designed to cut down on nuisance alarms from cooking smoke or other common false-alarm triggers. A single button both silences and tests the smoke detector for simple operation. The battery-operated fire detector can be easily installed without wires.

  • Battery-operated fire detector installs with no wiring required
  • Loud 85-decibel alarm is designed to be heard easily
  • Single test/silence button for simple operation
  • Technology detects both types of fires; smoldering and flaming fires
Product Overview


Technology Detects Both Types of Fires

The First Alert Smoke and Fire Alarm comes equipped with two different sensors to provide an early warning. The ionization sensor detects flaming fires, such as grease fires or wastebasket fires, and the photoelectric sensor detects smoldering fires, such as when a lit cigarette ignites clothing or upholstery. Both sensors in the battery powered smoke alarm work together to provide comprehensive smoke and fire detection.

Smart Sensor Minimizes False Alarms

People often disable fire detectors when they go off due to cooking smoke or steam, even though that leaves themselves and their loved ones unprotected. Intelligent sensing technology in the First Alert Ultimate Protection, Battery Powered Smoke and Fire Alarm is designed to distinguish between real fires and nuisances, reducing false alarms significantly so there is never a need to disable the smoke alarm.

Battery-Powered Fire Detector Installs Easily

The battery-operated fire detector can be installed with no wires required. A low-battery indicator light and audible chirp lets you know it is time to change batteries. The battery compartment opens without the need to remove the smoke alarm from the mounting bracket, making battery replacements quick and easy.

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Getting Started

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Product Manuals

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User Manual for SA320 Photo & Ion Smoke Alarm (English, Spanish)

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More Information on Ionization vs. Photoelectric Smoke Alarms