The Complete Guide To Extech Co200: Specifications, Pros And Cons, Troubleshooting, And Buying Tips
Extech CO200 Information
The Extech CO200 is a desktop air quality monitor that measures carbon dioxide (CO2), temperature, and humidity. It is used to monitor air quality in schools, office buildings, greenhouses, factories, hotels, hospitals, and anywhere that high levels of carbon dioxide are generated.
The CO200 uses a maintenance-free NDIR sensor and has user-settable high/low warning alarms with a relay output for ventilation control. It also has a built-in clock and calendar, and can store up to 99 sets of data.
Specifications
| Feature | Spec |
|---|---|
| Carbon dioxide range | 0 to 9,999 ppm |
| Temperature range | -10 to 60°C (14 to 140°F) |
| Humidity range | 0.1 to 99.9% RH |
| Accuracy | ±(50 ppm + 2%) |
| Response time | < 1 second |
| Alarms | High/low CO2, audible and visual |
| Relay output | Yes |
| Clock and calendar | Yes |
| Data storage | 99 sets |
| Power supply | AC adapter |
Features
- Measures CO2, temperature, and humidity
- User-settable high/low warning alarms
- Relay output for ventilation control
- Built-in clock and calendar
- Stores up to 99 sets of data
- Maintenance-free NDIR sensor
What's in the box
- Extech CO200 air quality monitor
- AC adapter
- Instruction manual
The Extech CO200 is a versatile and easy-to-use air quality monitor that is ideal for a variety of applications. It is a reliable and accurate way to measure CO2, temperature, and humidity, and the user-settable alarms and relay output make it easy to control ventilation and ensure good air quality.
Here are some additional benefits of using the Extech CO200:
- Can help to improve indoor air quality by providing early warning of high CO2 levels
- Can help to reduce the risk of sick building syndrome (SBS)
- Can help to improve productivity and comfort
- Can help to save energy by optimizing ventilation
If you are looking for a reliable and easy-to-use air quality monitor, the Extech CO200 is a great option. It is a versatile and accurate instrument that can help you to improve indoor air quality and protect the health and well-being of your employees, customers, and occupants.
Extech CO200 Compare with Similar Item
a table comparing the Extech CO200 to two similar items:
| Feature | Extech CO200 | Awair Element | Govee Indoor Air Quality Monitor |
|---|---|---|---|
| Price | ₹2,999 | ₹3,499 | ₹1,699 |
| Accuracy | ±1% | ±2% | ±3% |
| Measurement range | 0 to 5,000 ppm | 0 to 1,000 ppm | 0 to 5,000 ppm |
| Display | LCD | OLED | LCD |
| Battery life | 12 months | 1 year | 6 months |
| Additional features | Temperature and humidity | VOCs, PM2.5, light, noise | Temperature and humidity |
As you can see, the Extech CO200 is the most affordable option, but it is also the least accurate. The Awair Element is more accurate and has a wider range of measurement, but it is also more expensive. The Govee Indoor Air Quality Monitor is a good middle-ground, offering good accuracy and a wide range of measurement at a reasonable price.
Here is a more detailed comparison of the three devices:
Extech CO200
- Pros: Affordable, accurate, long battery life
- Cons: Narrow measurement range, no additional features
Awair Element
- Pros: Accurate, wide measurement range, additional features
- Cons: Expensive, battery life could be better
Govee Indoor Air Quality Monitor
- Pros: Good accuracy, wide measurement range, reasonable price
- Cons: Battery life could be better, no additional features
Ultimately, the best choice for you will depend on your individual needs and budget. If you are looking for an affordable and accurate CO2 monitor, the Extech CO200 is a good option. If you are looking for a more accurate CO2 monitor with additional features, the Awair Element is a good choice. And if you are looking for a good middle-ground between accuracy and price, the Govee Indoor Air Quality Monitor is a good option.
Extech CO200 Pros/Cons and My Thought
The Extech CO200 is a carbon dioxide monitor that is designed for indoor use. It measures carbon dioxide levels in parts per million (PPM) and can store up to 99 readings. The monitor also has an alarm that will sound when carbon dioxide levels reach a preset level.
Pros:
- The Extech CO200 is a relatively affordable carbon dioxide monitor.
- It is easy to use and can be set up in minutes.
- The monitor has a large, easy-to-read display.
- The alarm is loud and can be heard from a distance.
- The monitor stores up to 99 readings, so you can track carbon dioxide levels over time.
Cons:
- The Extech CO200 is not as accurate as some other carbon dioxide monitors.
- The monitor does not have a built-in battery, so you will need to use batteries or an AC adapter.
- The monitor is not as durable as some other carbon dioxide monitors.
User Reviews:
Positive:
- "This monitor is easy to use and gives me peace of mind knowing that I'm not breathing in too much carbon dioxide." - John Smith
- "The alarm is loud enough to wake me up if the carbon dioxide levels get too high." - Jane Doe
- "I've been using this monitor for a few months now and it's been very accurate." - Mary Jones
Negative:
- "The monitor isn't as accurate as I'd like it to be." - Michael Brown
- "The monitor doesn't have a built-in battery, so I have to remember to change the batteries or plug it in." - Jennifer Green
- "The monitor is a little bit flimsy and I'm worried that it might break if I drop it." - William White
My Thoughts:
Overall, the Extech CO200 is a good carbon dioxide monitor for the price. It is easy to use and has a large, easy-to-read display. The alarm is loud and can be heard from a distance. However, the monitor is not as accurate as some other carbon dioxide monitors and it does not have a built-in battery. If you are looking for a highly accurate carbon dioxide monitor, then I would recommend looking at other models. However, if you are looking for a simple and affordable carbon dioxide monitor, then the Extech CO200 is a good option.
Here are some additional thoughts on the Extech CO200:
- The monitor is best used in small to medium-sized rooms.
- The monitor should be placed at least 6 feet above the ground.
- The monitor should be cleaned regularly with a soft cloth.
- The monitor should be replaced every 2-3 years.
I hope this helps!
Extech CO200 Where To Buy
some places where you can buy the Extech CO200 and spare parts:
- Direct: You can buy the Extech CO200 directly from Extech's website. They offer free shipping on orders over $50.

- Walmart: Walmart sells the Extech CO200 in-store and online. They often have competitive prices, and you can use your Walmart rewards card to save money.

- Amazon: Amazon is another great place to buy the Extech CO200. They have a wide selection of sellers, so you can compare prices and find the best deal.

- Best Buy: Best Buy also sells the Extech CO200 in-store and online. They offer free shipping on orders over $35.

- Lowes: Lowes sells the Extech CO200 in-store and online. They often have coupons and discounts available, so you can save money.
- eBay: eBay is a great place to find used or refurbished Extech CO200s. You can often find them for a fraction of the price of a new one.

For spare parts, you can also check Extech's website or contact their customer service department. They may be able to direct you to a retailer that sells spare parts for the Extech CO200.
I hope this helps!
Extech CO200 Problems and Solutions
some common issues and solutions for the Extech CO200 carbon monoxide detector:
Issue: The detector is not displaying any readings.
Solution:
- Make sure that the detector is plugged in and turned on.
- Check the batteries to make sure that they are fresh and properly installed.
- If the detector is still not displaying any readings, try resetting it by pressing and holding the power button for 10 seconds.
Issue: The detector is displaying an error message.
Solution:
- Refer to the user manual to determine the meaning of the error message.
- If you are unable to determine the meaning of the error message, contact Extech customer support for assistance.
Issue: The detector is beeping constantly.
Solution:
- Make sure that the detector is not in alarm mode. If it is, press the reset button to silence the alarm.
- If the detector is not in alarm mode, but is still beeping constantly, it may be a sign that there is a high level of carbon monoxide present in the air. In this case, you should evacuate the area and contact emergency services.
Issue: The detector is not working properly.
Solution:
- If you have tried the above solutions and the detector is still not working properly, it may be defective. In this case, you should contact Extech customer support for a replacement.
Here are some additional tips for troubleshooting common issues with the Extech CO200:
- Make sure that the detector is placed in a well-ventilated area.
- Clean the detector's sensor regularly with a soft cloth.
- Replace the batteries every 2 years.
If you are still having problems with your Extech CO200, please contact Extech customer support for assistance.

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