I had 3 mini digital sound level meters from CEM. One of the minis died due to my pup thinking it was for her but still worked after a good chew. And another one who got hit by a car when the meter fell off my truck. The CEM meter, abuse aside, is a fantastic gauge. I needed a meter to document noise in a court case so I wanted something that could be calibrated so I got a Reed ST-8050 Sound Level Meter that can be calibrated. After testing both gauges in parallel, I found that the Mini performed almost as well as the ST-805. Response time and measured values were identical. The biggest difference I saw was maybe 1dB lower in the Mini. I put them in front of the TV and very quickly turned the volume up and down on different music channels and again the results were almost identical. And I tested them against a noise source that I documented at 800 yards and they performed the same, but I noticed a significant difference in response at the lower dB readings between the minis. Could be read as low at 15dB while only being able to run at 24dB and the last one I have is the slowest to respond and can show a 20dB drop before slowly increasing to reach the sound level it measured . . But since my ST-805 stops working after one drop, I can't compare the slower max of the third Mini to see if it's still accurate.
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