System Sensor COSMO-2W 2-Wire CO/Smoke Detector

  • JMAC SKU: SYSTEM-SENSOR-COSMO2W
System Sensor COSMO-2W 2-Wire CO/Smoke Detector
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The System Sensor COSMO-2W is a best-in-class i4 Series combination CO/Smoke detector is a 2-Wire carbon monoxide (CO) and smoke detection technology in a single, system-connected device.

There are many reasons to choose the i4 Series combo CO / Smoke Detector. There is no need to ever purchase two seperate devices (CO detector + smoke detector) again. Once device means less wiring and less work for you! You will save countless hours wiiring, and save money on wires and junction boxes.

If you need Architectural of Engineering Specifications, please view our resources and find "Engineering Spec."

If you need a replacement CO cell - see part number CO-REPL. It includes a 10 year CO cell life, an end of life timer with apnel notification and chirp. It is also field replaceable without tools.

UPC: 783863044373
Also known as: BK-COSMO2W

Technical Specifications:
  • System Voltage: 12/24 VDC
  • Minimum/Maximum Voltage: 8.5V/35V
  • Maxmum Current: Startup - 200 uA, Standby - 50 uA
  • Maximum Alarm Current: 50 uA
  • Operating Temperature Range: 0 - 50 C (32 - 122 F)
  • Operating Humidity Range: 20-95% RH
  • Dimensions: 5.5" D x 2.5" H
  • Weight: 9.2 oz (261 g)
  • Wire Gauge Acceptance: Min: 22 AWG Max: 14 AWG


For more information about the System Sensor COSMO2W, please contact us.
  • 2-wire, 12/24V model
  • Single device for CO and smoke detection that uses less wiring and fewer junction boxes
  • Compatible with a wide range of control panels with the use of the required i4 Interface Module.
  • Sends distinct smoke and CO signals to the panel
  • Sounds Temporal 3 for smoke and Temporal 4 for CO
  • Built-in 85dB sounder
  • LEDs display both CO and smoke status
  • External IR LED provides extended range sensitivity testing
  • Versatile mounting allows for wall or ceiling placement
  • Easily replaceable electrochemical CO cell with 10-year end-of-life timer that signals the panel and chirps to alert the homeowner
  • RealTest enables functional test using canned CO
  • Drift compensation and smoothing algorithms provide false alarm immunity
  • Compatible with SENS-RDR sensitivity tester
  • Full agency compliance with UL 268 and UL 2075


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  • click to add click to add click to add click to add click to add 5
    SYSTEM-SENSOR-COSMO2W

    Posted by 160496 on Sep 4th 2020

  • click to add click to add click to add click to add click to add 5
    SYSTEM-SENSOR-COSMO2W

    Posted by 88122 on Aug 26th 2015