Draw a UML domain class diagram to represent the following home automation system. You must show all the classes, the associations between them and the multiplicities.

‘A wireless home automation system has been deployed in a house in Bathurst. Motion sensors have been installed at various locations in the house. While in normal operation mode (when the security system is not armed) if motion is detected, the motion sensor notifies the security system, and turns on the lights adjacent to it. Contact switches are installed on all the doors. Each contact switch will alert the security system whenever the door it is attached to is opened or closed. While the system is armed, if any door is opened or closed, or motion is detected, the security system will turn on all the lights.'