We called the gas company and they found numerous leaks in the house

I bought this to make sure my gas fireplace wasn't leaking (hadn't used it three years!) this past winter

Works well, used it around the house i smelled natural gas at my gas meter but i couldn't find where the leak was, or if there was a leak

I tested on a propane lighter and the unit sounds an audible alarm with yellow for low concentration gas or yellow and red for high concentration gas