For sale (3) active piezo speakers. These are among the smallest through-hole (or solder-wire) piezo speakers out there.
freq. ~2.3khz
Please make sure you are ordering the correct piezo speaker. These are ACTIVE piezo speakers, NOT PASSIVE. These active speakers only need DC voltage applied to their pins to work.
As you might expect these are the same 9mmx5.5mm speakers sold by others, but with my caliper everyone else's dimensions seem to be off.
I measure the diameter at 9.2mm
The depth does indeed seem to be 5.5mm
The pitch of the contacts (width center-to-center of the pins) seems to be 5mm
Sometimes dimensions are important! Not sure why everyone else is wrong. Please consider buying from a seller who gives as much information as I can.
I am located in the USA, so shipping is fast for my fellow USA residents :)