@gohan Yes it depends on the time lag or reaction time one can live with. I could live with 10-20 seconds for most of my things. And in this mode the node can stay for years on battery. Not actually tested but calculated 
Best posts made by strangeoptics
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    RE: Raspberry PI OpenHab and gatewayposted in OpenHAB
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    Is there a logging function in the Raspberry Pi Gateway?posted in General DiscussionHi, I am looking for a log to have the posibillity to look up error messages if something goes wrong in the gateway. 
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    RE: SmartSleep a feature of the Gatewayposted in Feature RequestsNice. Didn't know that. But still it would be a great feature for the gateway to give every one the feature of smartSleep despite the controller.