... ovens, computers, calculators, telephones, electronic and toys . One.Piezo Ceramic Element Applications1. For sound making:Clocks,Calculators,Telephones,Washing machines,Various ... : Embryo monitor,Heart reflectoscope reflector,pedometer, car alram sensorTwo.Brief description of piezo diaphragmProduct type according to drive:1,External ... good reputation for the past 21 years. Piezo Ceramic Element