0000,0000,0000> Brent > > Can You deliver further info about sensor (extra weight on piezo and > so...) here or personaly. > > Pedja We didn't add any extra weight to the sensor. Don't know why you would want to do that. Would it be the same as low pass filtering? I have just been looking at http://www.murata.com and they didn't appear to have data on the PKS series....wait, I found it!... http://www.iijnet.or.jp/murata/products/english/catalog/index.html Look down the page for Piezoelectric Ceramics Sensors("PIEZOTITE") The file is P19E6.pdf, it's about 500k, look at page 27. If you have problems downloading the file I could email it to you. They are 24mm diameter plastic enclosure with lead wires, two mounting tabs. Just like a regular piezo sounder without the hole in the front. I think a regular piezo might be just as effective, depending on your application. Brent Brown Electronic Design Solutions 16 English Street Hamilton, New Zealand Ph/fax: +64 7 849 0069 Mobile/text: 025 334 069 eMail: brent.brown@clear.net.nz -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu