5v active buzzer, 3.5-5.5v in, a very audible 2.3khz tone out. "Active" refers to that the circuitry for the signal is integral, you need only feed it DC voltage and it'll do the rest. Outside dimensions are 12x9.6mm without leads.

Fantastic for any device or skill game requiring a highly audible alarm. The tone is quite high, and can be muted by the careful application of tape to the hole on top. See alternate pictures for technical details.

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As always, Vadien is dedicated primarily to promoting scientific endeavors and education through quality and hard-to-find supplies in the quantity and quality you need. Let us know if you have any questions, or if you're having trouble finding the right part or material for your project, we're always glad to help with parts or advice!