Why don't you try to Murata web site? They produce ultrsonic sensors Bye Nicola Hi I wish to know what the electronic symbols for Ultrasonic Transducers look like (transmitter & receiver). Can anyone please refer me to a web page or maybe e-mail me the symbols? Thanks! Friendly Regards, Werner Soekoe WernerS@fsl.gov.za -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu