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Pocket CO

Looking for an effective and ultra-portable carbon monoxide detector you can carry anywhere? Check out the Pocket CO 300! Alerts you in 3 different methods, weighs less than 1oz and fits on a key chain!

The most innovative carbon monoxide detector/alarm on the market today, the Pocket CO 300 brings together effective carbon monoxide detection and warnings with easy portability and an affordable price. The Pocket CO is especially well-suited for pilots looking for a carbon monoxide detector that will outperform those "sticker" detectors while taking up a bare minimum amount of panel or cockpit space. With it's ability to be worn or attached to a keychain, the Pocket CO 300 can easily travel with you between your aircraft, boat, car and home with little-to-no fuss. The Pocket CO 300 alerts you to the presence of CO using an 82dB audible buzzer, LED light, and case vibration to ensure you don't miss the warning.

Understanding Alarms

Pocket CO is programmed to repeatedly pulse all of these alarms when the CO exposure reaches or exceeds certain limits. These limits are pre-programmed at the following levels: 

  • CO level between 50 PPM and 124 PPM: Alarm beeper/LED/Vibrator pulse once every 20 seconds.
  • CO level between 125 PPM and 399 PPM: Alarm beeper/LED/Vibrator pulse once every 10 seconds.
  • CO level exposure at or above 400 PPM: Alarm beeper/LED/Vibrator pulse once every 5 seconds. 

These are known as “instantaneous” alarms, since Pocket CO will alarm as soon as the level of CO reaches or exceeds these levels. The alarms at these levels are designed to protect you from the immediate health effects of carbon monoxide. Pay attention to your Pocket CO when it alarms, and vacate the area until the source of the CO can be found and addressed. 

The Pocket CO will also pulse its alarms during the following, nonCO related situations: 

  • Self Test: One alarm pulse is normal and expected during the Self Test.
  • Temperature above 50o C (122o F), or below 0o C (32o F): Alarm pulses, plus “HOT” or “COLD” on the display.
  • Sensor Malfunction: One alarm pulse, plus “SNSR” on the display. **Note that absence of this alarm does not necessarily guarantee that the sensor is working normally. 

The manufacturer recommends calibrating Pocket CO at least once per year, or whenever the accuracy of the reading is critical. 

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Tech Specs

Pocket CO Tech Specs


Keychain Aviation Carbon Monoxide Detector