High-pitched piezo beeper. 12 Vdc (3-20Vdc) operation. Freq: 85 Hz. 10 dBA / 10 cm. 23mm diameter x 10mm. PC pins on 15mm centers.
Customer Comments
A customer from East Coast
Good for morse code trainer
Nice loud beeper. Works with 5v
and 150-ohm series current-limiting resistor.
Important: these are non-polarized
so you can connect them either way.