Replacement Of Siren Control Module (SCM) Via The Normal Horn (Structure Week 2009 46-)

If the alarm system indicates break-in normally the Central electronic module (CEM) shall request activation of siren control module (SCM). If this cannot be done due to, e. g., disconnected siren control module (SCM), then the Central electronic module (CEM) activates the normal horn instead as replacement of siren control module (SCM).