CO GUARDIAN 451-201 Avionics Carbon Monoxide Detector

( Brand: Co Guardian ), ( Manufacturer Part Number: 451-201 ), ( Part Type: Detector ), ( Compatible Make: Avionics ), ( Country Of Origin: United States )

Review CO GUARDIAN Avionics Carbon Monoxide Detector

Introducing the Guardian 451-201 Avionics Carbon Monoxide (CO) Detector, a vital safety device designed specifically for aviation applications. This CO detector is engineered to meet the stringent requirements of the aviation industry, ensuring the highest level of safety and reliability.

The Guardian 451-201 Avionics CO Detector is a compact, lightweight device, weighing only 1.6 ounces (45 grams). Its slim design, measuring 1.5 inches (38 mm) in diameter and 0.6 inches (15 mm) in depth, makes it easy to install in even the most confined spaces. This CO detector can be mounted on various surfaces using the included 3M double-sided adhesive mounting pad or the supplied screws.

This CO detector features a sensitive electrochemical sensor capable of detecting CO concentrations as low as 20 parts per million (ppm), surpassing the Federal Aviation Administration (FAA) mandated minimum detection limit of 30 ppm. The sensor is tested and calibrated to ensure accurate and consistent readings.

The Guardian 451-201 Avionics CO Detector is equipped with a bright, red LED alarm indicator that illuminates when CO levels reach or exceed the preset limit. The detector also includes an audible alarm, emitting a loud, continuous 85 decibel (dB) alarm to alert the crew of potentially harmful CO levels.

This CO detector is designed with a long-lasting, replaceable lithium battery that provides up to 5 years of operation, ensuring continuous CO monitoring without the need for frequent battery replacements. The battery status is easily checked through the LED status indicator, which displays the battery's remaining power level.

The Guardian 451-201 Avionics CO Detector is designed to withstand the harsh aviation environment, featuring a rugged, anodized aluminum housing that protects against dust, moisture, and impact. The device is also approved for use in temperatures ranging from -40 F to 158 F (-40 C to 70 C).

This CO detector is easy to use and maintain, with a simple test button that allows users to perform a monthly self-test to ensure proper function. The detector also includes a diagnostic feature that displays the device's status, including battery level, sensor condition, and alarm history.

In summary, the Guardian 451-201 Avionics Carbon Monoxide Detector is a reliable, easy-to-use, and maintenance-friendly safety device designed specifically for the demanding aviation industry. Its advanced features, including a sensitive CO sensor, long-lasting battery, and rugged housing, make it an essential addition to any aviation application.

Pros and Cons of buying a Guardian 451-201 Avionics Carbon Monoxide Detector

a. Certified: The Guardian 451-201 Avionics Carbon Monoxide Detector is FAA TSO-C121 certified, which means it meets the specific requirements for use in certified aviation applications.

b. Multi-functional: This device not only detects carbon monoxide but also includes a temperature sensor and a system voltage monitor.

c. Compact Design: With a small size of 1.7 x 2.5 x 0.9 inches, it is easy to install and fits well in most aircraft interiors.

d. Long Battery Life: The unit is powered by a replaceable lithium battery that lasts up to 5 years, reducing the need for frequent battery changes.

e. Audible and Visual Alerts: The detector provides both audible and visual alerts when carbon monoxide levels reach dangerous concentrations.

a. Limited Connectivity: The Guardian 451-201 does not offer wireless connectivity or integration with other systems, which may limit its usefulness for some users.

b. Manual Reset: The device does not have an automatic reset feature. Users must manually reset the unit after clearing carbon monoxide levels.

The Guardian 451-201 Avionics Carbon Monoxide Detector is a reliable and effective solution for detecting carbon monoxide in aviation applications. Its FAA certification, compact design, long battery life, and multi-functionality make it an attractive option for pilots and aircraft owners. However, its lack of wireless connectivity and manual reset may be drawbacks for some users.

If you are looking for a certified carbon monoxide detector for your aviation application and prioritize its compact design, long battery life, and multi-functionality, the Guardian 451-201 Avionics Carbon Monoxide Detector is a solid choice. However, if you prefer wireless connectivity or automatic reset features, you may want to consider other options.

Details:

Guardian Avionics Carbon Monoxide Detector, Part # 451-201, Serial 112755, Brand new, box was only opened for pictures.

part #: 451201 prices

• $109.00-$500.00

specifications avionicavioni:

• brand: Co Guardian
• mpn: 451-201
• part type: Detector
• compatible make: Avionics
• country of origin: United States

shipping avionicavioni:

• class: Economy, Standard
• carrier: UPS, USPS
• transit: 5-8 Days
• type: Calculated
• service: UPS Ground Saver, USPS Ground Advantage
• cost: $25.56

offer avionicavioni:

• best offers: True
• sold: 0
• started: March 18, 2026
• quantity: 1
• options: Ship-to-home
• availability: In Stock

seller avionicavioni:

• rating: 100.0%
• # reviews: 33
• city: Grants Pass, Oregon

payments avionicavioni:

• other
• wallet: Apple-pay
• credit card: Mastercard

general avionicavioni:

• condition: New
• Aviation Parts Accessories > Avionics > Other Avionics

returns avionicavioni:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

Co Guardian 451-201 Is Similar To:

• Guardian Avionics 209-101a Dual Usb Charging Port Volts 12 28 P n 200-101a (36.2% similar) Guardian avionics dual USB charging port volts 12/28 blue wire ground white wire power part number 200-101A...(November 3rd, 2024)
• Guardian Avionics 353p-201 Remote Mount Carbon Monoxide Detector (71.8% similar) Part #: Guardian avionics 353P-201 for sale...(January 19th, 2025)
• Guardian Avionics 851-201-002 Mfd 851 Integrated With Garmin G3x And Gps Garmin Avidyne (35.5% similar) This item is new old stock that was never installed. Purchase date 10/05/2021. This unit is remote mounted behind the panel or on a smart plane iPad mount to save space in smaller panels and designed integrate with Garmin G3X, GPS Garmin 175/430/530/650/750, GRN750/650XI, GNX375, GNC355 anodyne 440/...(April 18th, 2025)
• Guardian Avionics 851-201-001 Mfd 851 Integrated With Garmin G3x (42.7% similar) The FD 851 Communicates with the Stamford IOS app via a hard wire USB Connection. The FD 851 is a flight data recorder, Co detector, USB power supply dual 2.7 amp that works with the Guardian avionics smart plane app system. Purchase date was 01/13/2021. 30 day warranty. Everything that is included ...(April 18th, 2025)
• Guardian Avionics 452-201-010 Co Detector P n (58% similar) New old stock new, unused part. With its specific manufacturer part number, 452-201-010, this detector guarantees Compatibility and functionality for a wide range of aircraft model's. Serviceable marked as operational by a mechanic. Guardian avionics Co detector - p/n 452-201-010, as removed, the ...(October 2nd, 2025)
• Guardian Avionics 52-139 Smartpanel Mount For Apple Ipad Air Gen 4 5 2020 And Pro 11 Usb-c (39.2% similar) A new flush mounting system to dock and fully integrate your apple iPad air 4/5 gen 2020 pro 11 USB-c only into aircraft instrument panel. Power supplies may be installed as a minor alteration. The clean, flush mount has a shallow chassis allowing it to be easily installed in even the smallest of ...(October 3rd, 2025)
• Guardian Avionics 452-101-008 Co Carbon Monoxide Detector (76.4% similar) New in package nos, Guardian avionics carbon monoxide detector nos...(March 5th, 2026)