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Geiger PLUS Carbon Monoxide Detector
Know if Carbon Monoxide (CO) levels are dangerously high!
 
Receives Alerts on Carbon Monoxide and Volatile Organic Compounds (VOC), such as exhaust and gasoline vapors, dangerous to pilots and passengers.
 
Calibrated in accordance to FAA published guidelines. For reference, see Carbon Monoxide, a Deadly Menace (faa.gov)
 
Aaural alarm starts at ~41PPM and changes to a more insistent tone at 100PPM.
Much smaller, more responsive, USB rechargeable and more affordable than competitive models.
 
BUY AT AIRCRAFT SPRUCE

Geiger PLUS Carbon Monoxide Detector

SKU: GEIGER PLUS
$99.95Price

  • Geiger PLUS is a key fob-sized unit that provides real time aural alarm when carbon monoxide levels are dangerously high. The unit provides a very loud distinctive alarm at ~41 PPM and an even more annoying alarm at 100 PPM.

     

    The product also detects Volatile Organic Compounds, such as gasoline. 

     

    In contrast to competitive products, GEIGER PLUS is much smaller, more responsive and rechargeable. It is designed to run off of an internal USB rechargeable battery.

     

    Geiger PLUS is designed to be attached to a keychain, but because of its small size, it can be hung anywhere. According to our market research, this is the smallest, most portable, most usable CO monitor available, and it is reasonably priced.

     

    This updated version of the predecessor product (Geiger CO) has exciting new and compelling features:

    • It comes to life much more quickly and may be turned on even in poisoned air, without requiring a startup in clean air.
    • The calibration point is digitally aligned with each unit at the factory, for a baseline of zero PPM, and is also calibrated for 100 PPM.
    • The LED scale is engineered to FAA guidelines for strength of CO and color coding thereof. For reference, see Carbon Monoxide, a Deadly Menace (faa.gov)
    • This new design advises of the possible presence of Volatile Organic Compounds (including exhaust and gasoline vapor) via a distinct, blue LED.
    • The aural alarm starts at ~41PPM and changes to a more insistent tone at 100PPM.
    • The rechargeable battery gives ~6 hours of operation along with a 30-minute recharge time from any USB port (to 80% of charge).
    • A new service, Factory Recalibration, is available for $70. This includes a new battery and a fresh calibration for zero and 100 PPM along with an additional 1 year warranty.
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To Our Customers

The instruments from Radiant Technology are not designed to be used in applications where their failure would endanger safe flight or human life in any way. They are intended solely for use in VFR conditions. They are not certified to meet any Technical Standard Order, and are not produced under a Parts Manufacturing Authority (TSO / PMA). As a result, they are suitable only for use in experimental and ultralight aircraft, and in Light Sport Aircraft, if meeting the requirements of the respective manufacture.

Support

If you need support for your Radiant instrument purchase, please contact us by email at support@radiantinstruments.com. Because of our small staff, we do not have a direct phone number.  We do our best to respond to emails as soon as possible. If you do not hear from us within 48 hours, please try again. You may also try kathy@radiantinstruments.com. Please check our our Warranty Information here.

Shipping Information

We are in the business of offering innovative aircraft instruments for experimental aircraft flying, and backup / CO instruments for general aviation (non-TSO/non-PMA). As a result we often introduce new products for sale that are in the final engineering phase. Sometimes an engineering problem emerges in the final phase that delays our production runs. This means that if you are ordering a new product, we could be several weeks out from shipping. We try to keep our product pages up to date with shipping information.

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As of 2025, there are only two of us working Radiant instruments. We manufacture products in batches, and cycles take about a month. It is always best to order now and get on the list. We do charge your card at the time your order is placed.

 

We are now able to offer 2nd day UPS shipping on domestic orders, as well as USPS Ground Advantage. In some cases, we may need to revise you shipping amount, and will notify you by email of that change.

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