Even the best intrusion alarm system is inefficient if there is no on-site reaction. Area guarding on their inspection tour have permanent contact with their service control centre. They check closing an status of their object security technology in alternating times. By this we close the security circuit of hazard alarm technology, object controls and our net of emergency and service control centres recognised by the VdS. Object damage and susceptibilities are reported to the control service centre which operates customer based intervention measures.