RDL TX-PSD1 Paging Sound DetectorThe TX PSD1 is the ideal choice in many applications where switching needs to be controlled from a constant voltage amplified audio source. The module will trigger on any program material, with paging sources being the most common. The TX PSD1 provides an open collector SLAVE output to control other modules or equipment when a paging signal is detected. The amplified audio source is connected using a detachable terminal block. A front panel switch is