Siren Length - Turning Off

Konnected pro panel with HA and Alarmo. 

My siren seems to be turning off after about 20 seconds even before the alarm is disarmed. Is there a way to keep it running until I disable the alarm? Is this controlled in the setup of ALARM 1 when you set the pulse duration, pause between pulses, times to repeat? If yes, what should be the default numbers?