Firex Ionization Smoke Alarms

How Fast You Can Get Out of Your Home is Key to Surviving a Fire


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Firex Ionization Smoke Alarms

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Firex i5000 Ionization Smoke Alarm

Low Price GuaranteeWhat's special about these smoke alarms?

  • Effective at detecting fast moving, flaming fires which are fueled by combustible materials and spread quickly
  • Equipped with an 85 dB horn, test switch, and lighted power/alarm LED indicator to alert you in more than one way
  • UL Rated 217
  • Click for More Features

The Firex ionization smoke alarms are ideal for fast moving, flaming fires. Ionization-type smoke alarms work because there is a small amount of radioactive material between two electronically charged plates which causes current to flow between the plates. When smoke enters the chamber, it disrupts the flow of ions, thus reducing the flow of current and activating the alarm.

  • These fires are typically triggered by flammable liquids or paper burning in a waste container
  • The most common type of smoke alarm because they are reliable and economical
  • The LED lights confirm the unit has power and gives you visual confirmation of initiating alarm in interconnected systems
  • 5 year manufacturer warranty
  • Dual ionization smoke sensing chamber - early detection of fast burning fires such as gasoline, cooking grease and paper
  • Installation design and features similar to other Firex smoke alarms - Contractor familiarity with installation
  • Interconnect Flexibility - Product line offers contractors the right number of interconnects for their application
  • Lighted Power/Alarm LED - Confirms unit is receiving power and provides visual indication of initiating alarm in interconnected systems
  • Incorporates Firex installer-focused innovations - Fastest and easiest installation available
  • Factory sealed housing - Prevents tampering and provides outstanding durability


  Item FX-i5000
Product Weight 0.5 lb
Product Dimensions 5.6" diameter x 1.8"
Operating Temperature 40° - 100° F (4.4° - 37.8° C)
Interconnect Quantity up to 24
Electrical Rating 120VAC, 60Hz direct wire with 9V Alkaline battery backup
Alarm Point 0.50 to 0.92%/ft
Horn Output 85dB at 10ft
Listing UL 217, NFPA72
Detection Type Ionization sensor
Humidity Range up to 85% Relative Humidity
FX-i5000 Firex Ionization Smoke Alarm 120V Direct Wire
w/ 9V Alkaline Battery Backup
brk-sa305b alarmFirst Alert Ionization Sensor Smoke Alarm
BRK Brands / First Alert Ionization detectors consist of two plates separated by about a centimeter. The battery applies a voltage to the plates, charging one plate positive and the other plate negative. When smoke enters the ionization chamber, the smoke particles attach to the ions and neutralize them, so they do not reach the plate. The drop in current between the plates triggers the alarm.
child safety Child Safety Kit
Whether you're a new parent or just looking for a unique baby shower gift, our Child Safety Kit contains a mix of both tried-and-true and not-so-common childproofing products that will work together to make any home a safer place for babies and small children. In addition to the familiar cabinet/drawer locks and furniture corner covers, we've mixed in a few of our own electrical safety and cable management specialties to take childproofing to the next level.
Fire Alarm WiringFire Alarm Cables
From / 1000 FT
Introducing Non Plenum, Plenum and Shielded fire alarm cable for power-limited fire alarm and communications cable for riser and non-riser applications. You can use our fire alarm cable with confidence for your smoke detectors, signaling, fire alarm, and fire protective circuits.
Wire CutterWire Stripper
Our compact, lightweight wire-stripping and cutting tools gauge, cut, strip and loop wire, cleaner and easier than ever before. Their new wider handles with cushion ridges are designed for more comfort to reduce fatigue. Spring-loaded action returns handles to open position. Narrow nose fits into tight places.

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