Extech CO240 Portable Carbon Dioxide Quality Analyzer Review

According to my experience, this analyzer is incredibly accurate and reliable for measuring air quality in industrial and scientific settings. It detects even the slightest traces of carbon dioxide, which is essential for ensuring a safe and healthy working environment. The device is portable and lightweight, making it easy to use on the go. However, the screen can be difficult to read in bright sunlight, which can be a bit inconvenient. Overall, I would highly recommend this product for anyone

1. CO2 readings are accurate, but sometimes readings get wrong if you accidentally shake the meter. Really sensitive type of meter.2. Temperature - I think it's a little over +1C compared to my Fluke 971 calibrated meter. The response time is too slow and you have to wait a bit to get the correct reading. In my case I need a quick answer because I am doing an energy audit and of course I have to measure many points. It took me more days to complete the task due to the slow response time.

Terrible, overpriced, unreliable, unstable and inaccurate meter. Would give a zero or negative* rating if I could. DO NOT BUY THIS EXTECH CO2 Meter. I bought three different CO2 monitors. An in house power supply from Gain Express, a battery from NewishTool and then Extech because it was a well known brand and more portable. Unfortunately, the $300 Extech was unstable from the start and needed constant recalibration. Much worse than $120-140 units. Then last week it started showing 6000ppm…