The SMAT transducers are specifically developed to meet various requirements, such as loud sound pressure level, mounting methods, connection possibilities and dimensions. 

The transducers do not have a built-in oscillator.  The drive frequency must be generated with electronics outside the transducers.  Our transducers produce a highly reliable tone signal, giving either an extremely clear and penetrating tone or a soft sound for non-aggressive signals. 

They are available in five sizes : 13 mm, 17 mm, 21 mm, 24 mm and 30 mm.