Try installing the 2.2KΩ Resistor across the + and – of the siren. When Output 2 is set to Voltage (Globals 26) it is rated for 12 VDC at 1 AMP max current and you should make sure your self-contained siren does not draw more than 1 Amp.
Try installing the 2.2KΩ Resistor across the + and – of the siren. When Output 2 is set to Voltage (Globals 26) it is rated for 12 VDC at 1 AMP max current and you should make sure your self-contained siren does not draw more than 1 Amp.