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Radiant Carbon Monoxide USB Alarm

12 Reviews 1 Answered Question
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Overview

In our effort to enhance safety in aviation, we're introducing the CO-USB Carbon Monoxide Alarm, a simple device that provides a brilliant and reliable indication of CO poisoning. Per FAA guidelines, it flashes bright RED at 41 PPM.

Power it up from any USB port, even your Android or late-model iPhone (15 or later). With a 3-year warranty and low power consumption, you can depend on its reliability.

It's part of our commitment to prioritize affordability, ease of use, simplicity, and reliability—all crucial features for enhancing safety in aviation.

It also includes a serial port for easy OEM integration that can be programmed to any alarm value and offers continuous output of CO value via an always broadcasting serial line.

CO-USB-UP provides a brilliant and reliable indication of CO poisoning. Per FAA guidelines, it flashes bright RED at 41 PPM. For reference, see Carbon Monoxide, a Deadly Menace (faa.gov).

Note: If you're looking for the best panel installation, check out the CO-USB-UP (reverse-orientation), which reverses the orientation of the LED to face upward.
   
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Features

  • Plugs into any USB port for power / charging
  • Low power consumption (30 milliamperes)
  • 3 year warranty
  • Excellent anti-interference from other gases
  • Temperature compensation; works across -10 to 40C
  • 3 minute warmup to first accurate result
  • 30 second response to first indication
  • 90 second recovery after removal of CO gas
  • Red LED flashes at 41PPM
  • Digital output via serial data (0 to 1000ppm results @ 9600 baud) (via 5 pin port) (CO-USB Original only)
  • Digital Alarm signal output; provides a logic “1” (5 volts) whenever the red LED is flashing (via 5 pin port) (CO-USB Original only)
  • 8 hour battery life (CO-USB-Battery only)
  • LEDs face up (CO-USB-UP only)
  • 85 db alarm (CO-USB-Battery only)

Documents

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Reviews

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For the price, this little device seems to work well. On the first flight after I bought it, it detected CO in my airplane. Now were making repairs. Thankful it did what it was supposed to do.

Marshall C Verified Purchase

Radiant Carbon Monoxide USB Alarm - Reversed LED Configuration
December 17, 2025

Product is awesome. I gave one to a friend and it immediately alerted to a problem. A large crack was then discovered in the muffler. My friend could have been seriously injured if I didnt gift him the sensor.

Jon M Verified Purchase

Radiant Carbon Monoxide USB Alarm
December 11, 2025

Small footprint. Increases safety.

John A Verified Purchase

Radiant Carbon Monoxide USB Alarm
December 2, 2025

When I advised Aircraft spruce one of the two USB Alarms wasnt operational they replaced it. Very satisfied with Carbon Monoxide USB alarm and with Aircraft Spruce

Bryan H Verified Purchase

Radiant Carbon Monoxide USB Alarm
November 8, 2025

The sensor worked as described when I tested it. It is compact and easy to use. Price is right too.

Jeff H Verified Purchase

Radiant Carbon Monoxide USB Alarm - Reversed LED Configuration
October 18, 2025

This is a good idea, not expensive, not large and since I have charging ports in tge panel on both sides I usually have an open slot to use. I have another monoxide sensor in the cockpit however this one doesn’t use batteries.

William H Verified Purchase

Radiant Carbon Monoxide USB Alarm
September 4, 2025

Pretty good.

David C Verified Purchase

Radiant Carbon Monoxide USB Alarm
August 28, 2025

In trial now, hope I dont need it!

Stephen L Verified Purchase

Radiant Carbon Monoxide USB Alarm
August 19, 2025

Very happy with the product. Works as advertised!

Phillip J Verified Purchase

Radiant Carbon Monoxide USB Alarm
June 17, 2025

Works well and great value.

William R Verified Purchase

Radiant Carbon Monoxide USB Alarm
June 21, 2025

Q&A

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Please note, Aircraft Spruce ®'s personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce ® assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: I would like one of these detectors, but I am unclear as to its orientation. If it is plugged into a Garmin GMA 345 audio panel, will the red light be oriented up?

If the audio panel is below your sight line, then you would want reverse orientation so the light would face up.

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