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CO1224TR - Honeywell System Sensor Hardwired Conventional 4-Wire 12/24-Volt Carbon Monoxide Detector (w/RealTest Technology)

CO1224TR - Honeywell System Sensor Hardwired Conventional 4-Wire 12/24-Volt Carbon Monoxide Detector (w/RealTest Technology)
CO1224TR - Honeywell System Sensor Hardwired Conventional 4-Wire 12/24-Volt Carbon Monoxide Detector (w/RealTest Technology)
Item# CO1224TR

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List Price: $155.61
Special Order: $103.74
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Please Note: The Honeywell System Sensor CO1224TR hardwired 4-wire carbon monoxide detector is a special order item.

Honeywell Home CO1224TR Product Description:


The Honeywell System Sensor CO1224TR is a round carbon monoxide detector, with a highly accurate and reliable electrochemical sensing cell, used to provide early warning of dangerous CO levels. The CO1224T is a 12/24 volt, 6-wire, system-monitored carbon monoxide detector with RealTest Technology.

The CO gas sensing cell used in the CO1224TR carbon monoxide detector can be tested using a CO gas agent, fully meeting the requirements of NFPA 720: 2009. Simply put the detector into RealTest mode, spray a small amount of CO into the detector per the installation instructions, and within seconds the detector will alarm, indicating successful gas entry.

When dangerous amounts of CO are detected, the CO1224TR carbon monoxide detector alert residents by sounding and flashing a temp 4 signal alarm. With 24/7 GeoArm central station monitoring, residents are guaranteed protection whether they are away from home, sleeping, or already suffering from the effects of CO.

The CO1224TR carbon monoxide detector is designed for system operation. This carbon monoxide detector is fully listed to UL 2075 and offer a code-required trouble relay to send a sensor failure or end-of-life signal to the control panel and GeoArm's nationwide central monitoring station. The CO1224TR also uses SEMS-type terminal Philips head screws for quicker and more positive wiring connections and code-requiring wiring supervision. With a low current draw, this carbon monoxide detector enables more devices to be connected to the alarm control panel, limiting the need to purchase extra power supplies or more expensive replacement panels. As 12/24VDC detectors, the CO1224TR will operate on most existing security and fire alarm control panels.

Product Features:

  • RealTest™ enables a functional test using canned CO
  • Full compliance with UL 2075
  • Six-wire, system monitored
  • Local sounder
  • Alarm relay, Form C
  • Trouble relay, Form A
  • Dual LED's
  • Test/Hush button
  • Optional drywall anchors included
  • Test/Hush button
  • A code-required trouble relay
  • Wiring supervision with SEMS terminals
  • A six-year end-of-life timer
  • 12/24 VDC
  • A low current draw of 20mA in standby and 40mA in alarm
  • Versatile mounting for wall and ceiling
  • Accurate and reliable electrochemical sensing technology
  • Optional CO-PLATE CO Detector Replacement Plate to upgrade previously installed competitor detectors

Honeywell Home CO1224TR Product Specifications:


  • Dimensions: Diameter: 6.0 in (152 mm), Height: 1.3 in (33 mm)
  • Operating Temperature Range: 32°F to 104°F (0°C to 40°C)
  • Operating Relative Humidity: 22-90% RH
  • Weight: 11 oz (312 g)
  • Wire Gauge Acceptance: 14-22 AWG
  • Mounting: Single-gang back box; surface mount to wall or ceiling
  • System Voltage: Nominal: 12/24VDC | Minimum: 10VDC | Maximum: 33VDC
  • Average Standby Current: 20 µA
  • Maximum Alarm Current: 40 mA (75 mA test)
  • Alarm Contact Ratings: 30 VDC @ 0.5 A
  • Trouble Contact Ratings: 30 VDC @ 0.5 A
  • Audible Signal (temp 4 tone): 85 dBA min. in alarm (at 10ft)
  • Max. Start-up Capacitance: 20 uF

Honeywell Home CO1224TR Product Compatibility:


• Hardwired Control Panels (works universally across brands)*

* Depends upon the power availability of the control panel "brains" of the security system.

Product Reviews

Other customers rated this item:
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  Good price, reliable product,
Posted By:

I bought this product because my other one gave out. I've bought these before and have always been happy with them. They work very well. I'm very happy with it. Thank you.



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  A quality fair price unit,
Posted By:

Excellent unit easy to install, 5 minutes! Great coverage and quality for both smoke and Carbon monoxide. Made for easy and quick installation.



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  Installed quickly and easily,
Posted By:

The directions and illustrations were clear and concise. I was pleased with the ease of replacing the old pigtail with the new ones. Overall, a good purchase and gives peace of mind.


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  Safety 1st,
Posted By:
1 people found this review helpful

The package arrived on time and in very good condition. This was the perfect replacement for this hardwired, battery backup system. The seller was also excellent! Highly recommended!



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  Save Your Life!,
Posted By:

The alarm signal and voice warnings sound loud and clear, and it is simple to test the unit, and can be mounted pretty much anywhere without any professional help.

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