10Pcs 12mmx9.5mm Active Buzzer Alarm Ringer Continuous Beep DC 5V 85dB

hi and welcome to a new vlog in this episode we're going to be taking a look at a few different models of buzzers piezo buzzers that you can find these days on the usual websites Aliexpress ebay and bam good I'm especially interested in the output level of these different buzzers and foot for measuring that I got this sound meter from unity I ordered it from a bank good it was on offer I paid $10 for it I believe now you can get it for around 12 or 13 dollars but I will place links in the description below for other sources as well so you can check it out so it's supposed to measure sound from 30 up to 130 DB I believe this is the maximum error which is plus or minus 1.5 volt apiece we're not really interested in absolute measurements here or just trying to compare between these buzzards so I think this will do the job just fine there are other brands as well available you don't have to