Klein Carbon Monoxide Tester and Detector with Exposure Limit Alarm

On Amazon- Klein Tools ET110 CO Meter, Carbon Monoxide Tester and Detector with Exposure Limit Alarm - https://amzn.to/4gy1k8o Natural Gas Leak Detector with Audible & Visual Alarm - https://amzn.to/3PdQk44 After the company vented my new furnace into my attic, I wanted to take extra steps to ensure I was not breathing in carbon Monoxide. I already have 4 carbon monoxide alarms, but those are not made to really read anything below 200ppm, so it would not detect a slow leak. This Klein ET110 does! Fortunately, I did not have any readings of carbon monoxide in my home after the 3rd install.