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A comment on The Internet of Things – A Disaster. Parent comment

Re:The Internet of Things – A Disaster by soneil on Friday July 14, 2017 @05:24PM (#14773317)
If the control line for your furnace is just a 24V loop (or a dry loop), a good hint is that you can keep a traditional thermostat in parallel with your 'smart" one - so that if either closes the loop, the furnace fires.

Then you can aim for "comfortable" with your "smart" one and "safe" with your real one.

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Re:The Internet of Things – A Disaster by ghaff on Friday July 14, 2017 @05:54PM (#14773500)
That's probably true. And should also be part of the "smart" thermostat's design.
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