Larger units (like 30mm or 48mm diameters) often designed for 24V or 48V systems in control panels. Surface Mount (SMD): Tiny versions for mobile electronics, such as the LET9045CS series Where to Find the Full Datasheet
Small, round, black plastic housing. Common models include the 12V Mini HXD 5V HXD series Industrial Panel Mount: Hxd Buzzer Datasheet Pdf 48