The SMB-series (multi-frequency buzzers) offer the possibility to program several different frequencies.
The choice of the frequencies is simply done by changing the capacitor value in a C-MOS driven circuit.
Audible signals are part of our daily life. More sophisticated and distinctive functions are required for industrial purposes. These audible signals with multi-frequency programmability will become an important component that must be considered in every design of equipment, machines, household equipment, computers, communication equipment, control panels, etc.