Hello everyone, as the title suggests i'm in need of finding some specific vendors or catalogs for a few particular items needed in my design project. My University will be taking care of the bill, so while I would appreciate modest cost expenses, it would benefit my college to have some of these items for future students, and is of a better quality than legos :). With that being said (sorry for being lengthy), I am in finding myself in need of sensors able to monitor sound, and some sensors/equipment able to monitor vibrations. Microphones can work as long as they aren't massive, electrostatic or condenser mics would do just nicely. But as I have said...I am having a bit of trouble locating where to buy these :(. Could anyone direct me to a website or give me a couple phone numbers of some vendors that might have some of this equipment? I'd really appreciate it!! Edit: I'm sorry, I should have specified a bit more about the scope of their requirements....they are not being used for an industrial scale, and the dB threshold is very fine...it needs to be sensitive enough to accurately measure the dB from simply opening a door (that's about the the scale of this project), and a sensor device able to detect the same vibrations from said impact.