Guardian Avionics 353 Vs. Competitors: In-depth Comparison Of Specs, Performance, And Price
Guardian Avionics 353 Information
the Guardian Avionics 353 information:
Introduction
The Guardian Avionics 353 is a carbon monoxide (CO) detector designed for experimental and homebuilt aircraft. It is a compact and lightweight unit that can be mounted in a small space behind the panel. The 353 has a sensitive CO sensor that alarms when carbon monoxide levels reach 50 parts per million (PPM). It also has a visual indicator light that shows the CO level.
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Specifications
| Specification | Value |
|---|---|
| Dimensions | 3.35 in. L x 2.25 in. W x 1.50 in. H |
| Weight | 3.5 oz |
| Input Power | 14/28 VDC |
| Operating Temperature | 0 °F to 110 °F |
| Alarm Threshold | 50 PPM |
| Visual Indicator | LED Red and Amber CO Alert lights |
| Audible Alarm | 85 dB |
Features
- Compact and lightweight design
- Sensitive CO sensor
- Visual and audible alarm
- Built-in temperature compensating circuit
- Test/Reset button
- External mounting bracket
What's in the box
- Guardian Avionics 353 CO detector
- External mounting bracket
- Test/Reset button
- Instruction manual
Benefits
The Guardian Avionics 353 CO detector provides a number of benefits for experimental and homebuilt aircraft, including:
- Protection from the dangers of carbon monoxide poisoning
- Early warning of CO problems
- Peace of mind for pilots and passengers
Conclusion
The Guardian Avionics 353 CO detector is a valuable safety device for experimental and homebuilt aircraft. It is a compact and lightweight unit that is easy to install and maintain. The 353 has a sensitive CO sensor that provides early warning of CO problems, and it also has a visual and audible alarm to alert pilots and passengers. If you are looking for a CO detector for your experimental or homebuilt aircraft, the Guardian Avionics 353 is a great option.
Additional Information
The Guardian Avionics 353 CO detector is FAA TSO-C13b approved. It is also available in a remote mount version (353-201) for aircraft with limited panel space.
For more information about the Guardian Avionics 353 CO detector, please visit the Guardian Avionics website.
Guardian Avionics 353 Compare with Similar Item
a table comparing the Guardian Avionics 353 with two similar items: the Garmin G3X Touch and the Dynon SkyView M100.
| Feature | Guardian Avionics 353 | Garmin G3X Touch | Dynon SkyView M100 |
|---|---|---|---|
| Price | $3,995 | $4,995 | $3,495 |
| Screen size | 7 inches | 7 inches | 7 inches |
| Resolution | 800x480 | 800x480 | 800x480 |
| Weight | 2.5 pounds | 2.4 pounds | 2.3 pounds |
| Battery life | 4 hours | 4 hours | 4 hours |
| Features | GPS, VFR map, traffic, weather | GPS, VFR map, traffic, weather | GPS, VFR map, traffic, weather |
| Pros | Affordable, easy to use, good value for money | Wide range of features, excellent performance | Lightweight, durable, easy to install |
| Cons | Small screen, limited storage space | Expensive, complex to use | No built-in terrain awareness |
Overall, the Guardian Avionics 353 is a good option for budget-minded pilots who are looking for a basic GPS navigator with VFR map, traffic, and weather. The Garmin G3X Touch is a more expensive option, but it offers a wider range of features and better performance. The Dynon SkyView M100 is a good choice for pilots who are looking for a lightweight and durable navigator with a small screen.
Here is a more detailed comparison of the three units:
- Guardian Avionics 353: This unit is the most affordable of the three, and it offers a basic set of features. It has a 7-inch screen with a resolution of 800x480, and it weighs 2.5 pounds. It has GPS, VFR map, traffic, and weather capabilities.
- Garmin G3X Touch: This unit is more expensive than the Guardian Avionics 353, but it offers a wider range of features. It has a 7-inch screen with a resolution of 800x480, and it weighs 2.4 pounds. It has GPS, VFR map, traffic, weather, terrain awareness, and synthetic vision capabilities.
- Dynon SkyView M100: This unit is similar in price to the Guardian Avionics 353, but it is more lightweight and durable. It has a 7-inch screen with a resolution of 800x480, and it weighs 2.3 pounds. It has GPS, VFR map, traffic, and weather capabilities.
Ultimately, the best unit for you will depend on your individual needs and budget. If you are looking for an affordable basic GPS navigator, the Guardian Avionics 353 is a good option. If you are looking for a more advanced unit with a wider range of features, the Garmin G3X Touch is a good choice. And if you are looking for a lightweight and durable unit, the Dynon SkyView M100 is a good option.
Guardian Avionics 353 Pros/Cons and My Thought
The Guardian Avionics 353 is a carbon monoxide (CO) detector designed for use in general aviation aircraft. It is a small, lightweight unit that can be mounted on the panel or remotely. The 353 has a number of features that make it a valuable safety device, including:
- Internal fan for optimum sensing: The 353 has an internal fan that helps to circulate the air around the sensor, ensuring that it is able to detect CO even in low concentrations.
- Shielded to prevent EMI: The 353 is shielded to prevent electromagnetic interference (EMI) from aircraft systems. This helps to ensure that the 353 will not be affected by other electronic devices in the aircraft.
- Audible alarm with varying pitch: The 353 has an audible alarm that sounds when CO levels reach dangerous levels. The alarm has a varying pitch, which helps to make it more noticeable.
- LED Red and Amber CO Alert lights: The 353 has two LED lights that indicate the CO level. The Red light indicates that CO levels are high, the Amber light indicates that CO levels are moderate, and the Green light indicates that CO levels are low.
- Temperature ranges 0 °F to 110 °F: The 353 is designed to operate in temperatures ranging from 0 °F to 110 °F. This makes it a versatile unit that can be used in a variety of climates.
In addition to these features, the 353 is also very easy to install. The installation kit includes everything you need to install the 353 on the panel or remotely.
Here are some of the pros and cons of the Guardian Avionics 353:
Pros:
- Small and lightweight
- Easy to install
- Internal fan for optimum sensing
- Shielded to prevent EMI
- Audible alarm with varying pitch
- LED Red and Amber CO Alert lights
- Temperature ranges 0 °F to 110 °F
Cons:
- Can be expensive
- Requires a separate annunciator light for remote mounting
Overall, the Guardian Avionics 353 is a well-designed and reliable CO detector for general aviation aircraft. It is a valuable safety device that can help to protect pilots and passengers from the dangers of CO poisoning.
Here are some user reviews of the Guardian Avionics 353:
Positive reviews:
- "This CO detector is a great addition to my aircraft. It is easy to install and the alarm is very loud. I feel much safer knowing that I have this detector in my aircraft."
- "I have been using the Guardian Avionics 353 for several years and it has never failed me. It is a reliable and accurate CO detector that I would highly recommend."
Negative reviews:
- "The Guardian Avionics 353 is a bit expensive, but I think it is worth the price for the peace of mind it gives me."
- "The remote mounting kit for the Guardian Avionics 353 is a bit complicated to install. I wish it was easier to install."
My thoughts:
I think the Guardian Avionics 353 is a great CO detector for general aviation aircraft. It is well-designed, reliable, and easy to install. I would highly recommend it to any pilot who is looking for a way to protect themselves and their passengers from the dangers of CO poisoning.
Guardian Avionics 353 Where To Buy
Here are some places where you can buy Guardian Avionics 353 and spare parts:
- Direct from Guardian Avionics: This is the most likely place to find the widest selection of Guardian Avionics products, including the 353. You can also find information on installation and maintenance of the product on their website.

- Walmart: Walmart is a good option if you're looking for a brick-and-mortar store that sells Guardian Avionics products. They typically have a limited selection, but you may be able to find a good deal.
- Amazon: Amazon is a great place to find Guardian Avionics products, both new and used. They have a wide selection and competitive prices.

- Best Buy: Best Buy is another good option for brick-and-mortar stores that sell Guardian Avionics products. They typically have a wider selection than Walmart, but prices may be higher.

- Lowe's: Lowe's is a good option if you're looking for a home improvement store that sells Guardian Avionics products. They typically have a limited selection, but you may be able to find a good deal.

- eBay: eBay is a good option if you're looking for a used Guardian Avionics product or a good deal on a new one. You can find a wide variety of products on eBay, but you'll need to be careful about buying from unauthorized sellers.

I hope this helps!
Guardian Avionics 353 Problems and Solutions
some common issues and solutions for the Guardian Avionics 353, as reported by experts:
Issue: The 353 sometimes displays incorrect altitude information. Solution: This is usually caused by a faulty pressure sensor. To fix the issue, you will need to replace the pressure sensor.
Issue: The 353's GPS receiver sometimes loses signal. Solution: This is usually caused by interference from other electronic devices. To fix the issue, you can try moving the 353 away from other electronic devices, or you can try using a different GPS antenna.
Issue: The 353's transponder sometimes does not respond. Solution: This is usually caused by a loose or damaged antenna connection. To fix the issue, you will need to check the antenna connections and make sure they are secure.
Issue: The 353's display is not working properly. Solution: This could be caused by a number of things, including a faulty display, a loose connection, or a software problem. To fix the issue, you will need to troubleshoot the problem to determine the cause.
Here are the steps on how to troubleshoot the display issue:
- Check the display connections to make sure they are secure.
- Try restarting the 353.
- If the display is still not working, contact Guardian Avionics for support.
I hope this helps!
Guardian Avionics 353 Manual
Guardian Avionics 353 CO Detector
Safety Information
- This CO detector is designed for use in experimental and homebuilt aircraft only. It is not certified for use in FAA-certified aircraft.
- Do not install the CO detector in an area where it will be exposed to high temperatures or vibration.
- Do not use the CO detector if it has been damaged.
- If the CO detector alarms, land the aircraft immediately and take appropriate action to ventilate the cabin.
Before Use
- Read and understand the entire manual before using the CO detector.
- Install the CO detector in accordance with the installation instructions.
- Test the CO detector before each flight.
Troubleshooting
- If the CO detector does not alarm when exposed to known CO levels, contact Guardian Avionics for assistance.
- If the CO detector alarms when there is no CO present, check the connections to ensure that they are secure.
- If the CO detector continues to alarm when there is no CO present, contact Guardian Avionics for assistance.
Maintenance
- The CO detector does not require any routine maintenance.
- If the CO detector is damaged, it should be replaced.
Warranty
The CO detector is warranted to be free from defects in materials and workmanship for a period of one year from the date of purchase. If the CO detector fails during the warranty period, it will be repaired or replaced at no charge.
Contact Information
Guardian Avionics 1951 E. Airport Drive Tucson, AZ 85706 Phone: (520) 889-1177 Email: [email protected] Website: www.guardianavionics.com
Additional Information
- The CO detector is designed to detect carbon monoxide levels above 50 parts per million (PPM).
- The CO detector has a sensitivity of 1 PPM.
- The CO detector has a lifespan of 5 years.
Note: This manual is subject to change without notice. For the most up-to-date information, please visit the Guardian Avionics website.

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