Basically, the communication between a miniSPOT.net node and other devices within a building can be implemented in two different ways.

• Central Approach: All the communication is controlled by a common control center. When an alarm occurs, the miniSPOT.net node sends the alarm message directly to the center node, which then distributes the message to all other nodes within the network. This node then decides which actions (e.g. turn on/off the lights...)to perform next.
  
• Distributed Approach: All the communication is done directly between two partners. When an alarm occurs, the miniSPOT.net node sends the alarm message directly to the corresponding receiver. The receiver then decides which actions (e.g. turn on/off the lights...) must be carried out. The command center is not totally excluded from communicating and is acting as all other nodes within the network.
  

• Elevator: Multiple low cost cameras will be installed in the elevator of the Hel-Wacht main command and control center. Using the central approach, the system is preventing from vandalism in the cabin. The detection of any destruction of the elevator is performed by intelligent image processing algorithms. Additionally, the light of the floor where persons want to enter/exit the elevator is turned on/off automatically using the distributed approach.
• Garage: Multiple low cost cameras will be installed in the garage of the Hel-Wacht main command and control center. The system in the garage is able to detect conspicuous and abnormal behaviour and tracks of vehicles and persons. In this scenario, the siren is hand-operated at a control center, whereas shutting the doors is established distributed.