We are developing some cost-out projects which involve some changes in some specific compoenents. This is the reason that I am looking for a new piezo buzzer for this accomplishment. Our actual sales are about 25.000 units / year which could be increased due to this new range of products. I would like you if you could supply me info (datasheet / cost) for a piezo buzzer withthese features: . 60 dB at a distance of 1m . Power supply 24 VDC .Cost < 0.25 euros.