Originally Posted by
brainsan
The temperature is now dipping into the high 30's and low 40's here. My AZ now let's out of completely useless "psst.. psst.." instead of ear piercing truck horn like sound. I also have a 115 DB thunder horn. It is useless when used in traffic. The pitch of the sound is too high. Car drivers completely ignore it.
Yeah, I suppose the thunder horn isn't so effective when everyone's windows are rolled up...