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Communication and switching using mobile phones. Quite often you are away from home only for some quick errands. If the door call is forwarded to your mobile phone you can tell the person in front of the door that you will be home in a minute. Or you can tell the postman whom he should hand out the parcel. Is it a family member who has forgotten his key you can even open the door for him and switch on the light. Or you can activate other switching tasks using connected a/b switching modules. |