Old Mini B-series Thunderbolt pre Sirencon full test

Pretty much all done and ready for the Con! It’s pretty loud considering it’s one of my earlier sirens it measured 121 dB at point blank I usually don’t do but everyone else seems to be doing it now. Do it at 5-10ft jmo. 102 at 5 ft. The old blower was way overpowered and wasn’t a good idea to give to someone else. The new one is smaller more suitable and now has a pressure relief valve. Some things that I was impressed and not impressed like the horn is today’s standards is a bit meh. It’s aluminum and least and it’s effective. Can’t wait to hand it off to its new owner! I’m also bringing a couple other of my mini sirens too.