Intelligent Carbon Monoxide Detector

  • Material Obsolete
Brand: EST FireAlarm.com Part #: 008911 Categories: , Manufacturer Part #: SIGA2-COS


Signature Series SIGA2-COS carbon monoxide detectors bring advanced sensing technology to a practical design that increases efficiency, saves installation time, cuts costs, and extends life safety capabilities. Continuous self-diagnostics ensure reliability over the long-haul, while advanced electrochemical CO sensing technology provides performance benefits that keep occupants sage from the “silent killer”.

Like all Signature Series detectors, the SIGA2-COS is an intelligent device that gathers analog information from its CO sensor, converting this data into digital signals. To make an alarm decision, the detector’s on-board microprocessor measures and analyzes sensor readings over time. Digital filters remove signal patterns that are not typical of life safety events, thus virtually eliminating unwanted alarms.

The SIGA2-COS includes an advances carbon monoxide sensor and daughterboard. When the electrochemical cell reaches its end of life after approximately six years, the detector signals a trouble condition to the control panel. The sensor/daughterboard module is field-replaceable.


Weight 0.44 lbs


Detectable Gas


Material Qualities


Production Status

Product Notes

Replaced by SIGA-OSCD


  • Advanced electrochemical carbon monoxide sensing technology
  • Field-replaceable carbon monoxide sensor/daughterboard module
  • Uses existing wiring
  • Automatic device mapping
  • Ground fault detection by module
  • Up to 250 devices per loop
  • Non-volatile memory
  • Electronic addressing
  • Automatic day/night sensitivity adjustment
  • Bicolor (green/red) status LED
  • Standard, relay, fault isolator, and audible mounting bases


Intelligent Carbon Monoxide Detector; SIGA2-COS
Edwards. Data Sheet. 2018. 


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