DSC alarm - sirene not working

Hi, Im new to this forum.



I installed DSC alarm PC1616. Everything Works fine, except sirene.



I tested 2 sirens, both are working OK when plugged to the battery.



FIRST SIRENE:

When connected to DSC PC1616 panel, its making low noise all the time. When the alarm goes off, sirene goes off also. But there is always this low noise. I tried with resistors connected between + and - (bell ouput), nothing.



SECOND SIRENE:

It is always quiet. :wall:



Any suggestions?

DSC alarm - sirene not working