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Firex 12000 (FADCM) Carbon Monoxide and Smoke Alarm Direct Wire w/Battery Back-up (Upgraded to KN-COSM-IBA + KA-F2)
Firex 12000 (FADCM) Carbon Monoxide and Smoke Alarm Direct Wire w/Battery Back-up (Upgraded to KN-COSM-IBA + KA-F2)


When ordering this, we will upgrade to a current model, a plug-n-play unit. You only need to change the mounting bracket.

You should replace ALL your old Firex alarms with the replacement kit to maintain communication between all alarms.

If you need the 10 year sealed lithium battery, please click here.

Our Price: $47.88

Model: FIREX-12000

Technical Spec Downloads
Technical Spec

Firex® 12000 combination alarms monitor both smoke and CO emissions. Electrical contractors can easily satisfy most building requirements for fire and CO protection with a single unit, reducing installation costs. Smart Interconnect Wiring allows the Firex 12000 to be connected to additional smoke alarms and CO alarms on a single interconnect wire eliminating the need for additional wiring and providing whole-house protection.

Firex offers everything professionals demand: quality, reliability, a complete product line, technological innovation, easy installation, user-friendly design, and in-depth product and application knowledge. We’re here to help you get the job done right. That’s the Firex advantage.

  • EXCLUSIVE Monox Sensor with True-Test Sensor Diagnostics - Verifies that carbon monoxide sensor is working properly, and warns when the sensor is nearing the end of its service life.
  • EXCLUSIVE Monthly Self-Test - Alarm performs a silent internal system test to verify sensor operation.
  • EXCLUSIVE Interconnect Test - In an interconnected system, this feature will alarm the local unit first, then quiet the local unit while the remote units alarm.
  • Fast, Easy Installation - Smoke and CO alarms share a single Smart Interconnect wire, eliminating time-consuming additional wiring.
  • Single Installation with Double Protection - One alarm provides protection from smoke and carbon monoxide.
  • Front Loading Battery Door - Eliminates battery handling during installation and allows for safe and convenient battery replacement.
  • Battery Pull Tab - Makes installation faster and easier, reducing callbacks due to battery failure. Simply pull tab, close door and press test button.
  • Latching LED Alarm Indicator - A red LED flashes until reset for quick, clear identification of the initiating smoke or carbon monoxide alarm in an interconnected system.
  • Smart Quiet Trigger Alarm Locator - Pushing test button quiets all alarms EXCEPT the one that triggered the alarm.
  • Smart Quiet Low Battery Silencer - Silences low battery alert up to 10 hours.
  • Quick Quiet False Alarm Control - Quiets unwanted alarms for up to six minutes.
  • Dust Cover - Eliminates nuisance callbacks and false alarms by protecting alarm from dust, dirt, fumes or other common contaminants during construction.
  • Firex Compatible - Interconnects with most Firex smoke, heat and CO alarms. (See Technical Specifications section for interconnectable Firex units.)
  • Dual Ionization Smoke Chamber - Detects fast-burning or smoldering fires.
  • Ramp-Up Horn - Protects your hearing when testing the alarm by building up the decibel level slowly, giving you time to move away from the horn before the full alarm sequence begins.
Item 12000
Weight 11 ounces
Operating Temperature 40° - 100°F(4.4°C to 37.8°C)
Interconnect Quantity Up to 18 Firex devices maximum; Firex smoke alarm items 12000 (model FADCM), 5000 and 4618 (model FADC), 4518 (model ADC), 4418 (model AD), 4580 (model FAPD), 4480 (model PAD), 4671 (model TPCI), 406 (model G), Firex heat alarm 5700 (model ADH), Firex CO alarm 10000 (model COE) (up to 6 heat and CO alarms maximum). Not compatible with 7000 (model FADCQ) and 6045 (model COQ8).
Electrical Rating 120V AC, 60 Hz, 60mA max.
Horn Output 85 decibels at 10 feet
Listings UL 217 / UL 2034
Detection Type Electrochemical / Dual Ionization Chamber
Humidity Range 15% to 95% relative humidity

Firex 12000 diagram

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