Update - downgraded to 1 star. After trying multiple tests, I took unit out and turned on car. The alarm went off at once standing very near the rear of vehicle. After moving a hundred yards away and waiting for the CO to drop back down (which took almost 2 minutes even though I was FAR away from vehicle and reading dropped back to zero) I went back to vehicle and it would not sense any more CO. Either my 14 year old catalytic converter is 100% efficient or this thing is is randomly no good. Returning.
Also - note. The unit does NOT show background CO level below 9. So if you were interested in if there was, say a level just under the limit, it will not show it.
I'm rating this as 2 stars because I don't know for certain it is not working - but I am suspicious that it isn't and returning it. My other issues are that build quality, packaging, and instructions all seem off. The overall cost seems to be WAY too high. $99 for something I'm not confident in is way too much.
I took the detector into garage (after going to through the start up process described in instructions) where a kerosene heater (radiant type - which is supposed to be low CO emission but is still an UNVENTED combustion appliance) had been running several hours and the meter stays at 0. I wasn't sure before I tried it if the CO level might be above the warning threshold (hopefully not!) but I fully expected something from an unvented combustion source in a smaller, closed area. Nothing.
Returning as it is not very confidence inspiring - in function, build or packaging.
Unit is VERY small (much smaller than expected) and build doesn't "feel" or look very professional. (Or Japanese as they typically make quality items) Packaging was *very* disconcerting - it appears that Amazon *repackages* the unit, with semi-sketchy instructions that look like someone made at home, in a fleamarket-esque cheap white jewelry box (complete with white fiber batting inside), with STICKERS on box indicating what was inside.
I just don't get a confidence inspiring feel from the device and, in the end, I bought this for assurance that a poisonous gas wasn't building up in a confined area.
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|---|---|---|---|---|---|
| Customer Rating | (267) | (10280) | (264) | (743) | (6274) |
| Price | Unavailable | $22.82 | $129.00 | $31.60 | $19.47 |
| Shipping | — | FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime | FREE Shipping. Details | FREE Shipping. Details | FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime |
| Sold By | — | Union Sales | Inspector Tools | Amazon.com | Amazon.com |
| Color | BLACK | White | Black | 2.63 | White |
| Item Dimensions | 2.70 x 1.90 x 0.80 inches | 4.50 x 1.50 x 2.75 inches | 3.20 x 2.20 x 0.90 inches | 0.94 x 4.75 x 2.63 inches | 2.75 x 1.50 x 4.50 inches |
| Size | 67 x 47 x 20 mm (2.7 x 1.9 x 0.8 inches) | KN-COPP-B-LPM | — | Pack of 1 | — |
Customer Questions & Answers
Customer reviews
Top reviews from the United States
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Reviewed in the United States on January 15, 2019
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Reviewed in the United States on March 18, 2018
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Reviewed in the United States on March 25, 2018
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Reviewed in the United States on January 27, 2019
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Reviewed in the United States on August 1, 2018
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Top reviews from other countries
Victor
I have to pay for return. Poor stuff quality
Reviewed in the United Kingdom on January 31, 2020Verified Purchase
I have to pay for return. Poor stuff quality
Reviewed in the United Kingdom on January 31, 2020
Instruction:Reviewed in the United Kingdom on January 31, 2020
1st Alarm >9ppm@60sec
2nd Alarm>25ppm@80sec
2479ppm and no reaction.
I returned. Is not what suppose to be. Saler for USA and I have to pay for return.
Images in this review
River
Good quality CO safety device
Reviewed in the United Kingdom on November 28, 2020Verified Purchase
Daniel Foster
Great product, beware import charges
Reviewed in the United Kingdom on November 5, 2019Verified Purchase
SabSab
Important gadget easy to instal operate
Reviewed in the United Kingdom on February 29, 2020Verified Purchase
David Thomas
Co2 monitor
Reviewed in the United Kingdom on March 6, 2020Verified Purchase
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