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General Tools

Model # DCO1001

Internet # 100651815

Digital Carbon Monoxide Detector with Auto Zero Function

This item has been discontinued.
The Home Depot no longer carries this specific product.

$139.00 /each

  • CO range: 0-1000 ppm
  • LCD dual digital display
  • Audio alarm can be set to sound at any of eight levels




Model # DCO1001

Internet # 100651815

The battery-operated Digital Carbon Monoxide Detector with Auto Zero Function from General Tools features an electrochemical CO sensor with 3 points of auto calibration: 0, 100 and 500 ppm. The meter has a backlit LCD display and simultaneously exhibits dual readings of the current CO level and maximum level since the meter was powered on (updating every second). Other features include automatic calibration to 0 ppm in fresh air and an audio alarm that can be set to sound whenever the CO level exceeds any of eight selectable levels to indicate a dangerous CO concentration. It has a measuring range of 0-1000 ppm and comes complete with a soft case, a wrist strap, 3 AAA batteries and an instruction manual. The detector is ideal for HVAC contractors, plant operators, automotive experts and other professionals.

California residents: see  Proposition 65 information

  • Carbon dioxide (CO) range: 0-1000 ppm
  • LCD dual digital display also shows ambient temperature
  • Adjustable CO warning level
  • Includes 3 AAA alkaline batteries, operation manual, wrist strap and carrying pouch
  • Bright backlight
  • Low battery indication
  • Battery life is 250 hours with the backlight off and 35 hours with the backlight on
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Batteries Included 
Battery Charger Included 
Battery Power Type 
Battery Size 
Case Included 
Control Type 
Data Log/Record 
Data hold 
Display Type 
Low Battery Indicator 
Number of Batteries Required 
Product Weight (lb.) 
0.3 lb 
Reference Scale Included 
Test Meter Type 
Other Meter/Tester 
Tools Product Type 
Test Meter 
Warranty / Certifications
Manufacturer Warranty 
1 Year 


Rated 3.9 out of 5 by 9 reviewers.
Rated 5.0 out of 5.0 by Product worked as advertised Exactly what I was looking for. This device is quite accurate. I use the tester to check for exhaust leaks on diesel engines. March 27, 2013
Rated 3.0 out of 5.0 by Not high end but does the job This small CO digital detector does a nice job of taking a quick CO reading. We were having some issues with ceiling mounted battery operated First Alert CO detectors that were going off. We used this hand held unit to confirm that the Firt Alert units were getting wrong readings (or defective units). It's not fancy, but for the average user it does the trick. February 20, 2010
Rated 5.0 out of 5.0 by Good instrument to check CO in home We used an indoor rated gas heater in the basement during the cold weather and eventually a home CO monitor alarm triggered. This did not give the CO concentration but just that it had reached a dangerous level. We vented the house but was not sure that all the CO had been removed. We used this instrument to sweep the house and check that all CO had been removed. March 5, 2014
Rated 2.0 out of 5.0 by I don't trust it I was using this for my home inspection business and it seemed to read 0 then when I would pick it up it would jump all over. 70-140 then 0. Didn't feel like I could put families health on the line with these results. October 14, 2014
Rated 5.0 out of 5.0 by works fine It seems to work fine. I don't have anything to compare it to to measure its accuracy. But it was easy to use and it is a good workable size. May 21, 2013
Rated 4.0 out of 5.0 by Has all of the features I need Very easy to set up. Instructions are well written. I tested it on several known values and was quite surprised to fin d out how accurate this product performed. It exceeded my expections. October 30, 2012
Rated 4.0 out of 5.0 by This product is a great value. These do no last as long as the more expensive models, because they cannot be re-calibrated. But they are so much less expensive that over a 10 year period they are a much better value. April 2, 2013
Rated 3.0 out of 5.0 by The product did not meet my needs I need a monitor that will stay on for as long as I need it on a job, at least a couple hours. This one has an auto shutoff that shuts it down after 15 minutes, and does not save the values. A manufacturer's engineer confirmed it cannot be overridden. May 29, 2013
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