Review on Compact Professional Triplett SoniChek 3550 by Adam Nelson

Okay, now I'm not an audio engineer so I can't say how accurate it is, but I think it works pretty well. I measured different things in my house. The loudest was our little son who can scream at a whopping 120dB when angry! Wow, no wonder my ears hurt! As far as it works it has 3 modes. active measurement and maximum tone and minimum tone mode. It's pretty easy to click to find the mode you want. It comes with a 9 volt battery and feels solid and well built. It looks the same as shown in the product image and has a display backlight that turns on automatically when you are in dark places. I am satisfied with this product!