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DC Operated Piezo Buzzer

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Quoting product code: KU56L


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About this product


  • 3V to 24VDC operation

Product overview

An extremely loud PCB-mounting, piezoelectric buzzer designed to operate over a wide range of supply voltages. It has a built-in driver circuit and requires only a DC voltage to drive it. Working with a 24 Vdc supply voltage, this tiny unit can supply sound levels of over 95 dB at a 30 cm distance. The unit will operate well with 5V TTL voltages, drawing only around 2 mA. It will therefore make an excellent ‘bell’ or warning alarm for digital systems. Two 1.5 mm dia. holes are required 16mm apart. The case is finished in a cream colour, and features a dot to indicate the side with the positive terminal.


Operating Specifications

Sound Level:


Input Voltage:

3 - 24 VV

Resonant Frequency:






Connection Type:

Wire Terminals

Dimensions & Weight







what are its physical dimensions?

Asked by: Lyny
24mm diameter and 15mm deep.
Answered by: Dominic
Date published: 2016-12-13

will this work in a 3v dc circuit and if it did what kind of output in terms of decibels would be expected?

Asked by: David
This would provided around 80 dB at 3v.
Answered by: Dominic
Date published: 2016-05-31

will this work on AC voltage
Asked by: arun
No sorry this product does not support that.
Answered by: DM
Date published: 2015-07-17
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