GSM Control of Furnace

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barjebus

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Hello all. I'm a new user and just had a (hopefully) simple question for you. I've got a furnace at a cabin that I'd like to control remotely. I've come across some products that allow you to remotely control a relay via SMS or phone call. I was wondering if anyone had any ideas on how I could hook this up? I assume the furnace would need to continue to run, and I'd wire the relay to the thermostat input or something to trigger it to turn on?

I read in the FAQ not to post links so I will not link to the product in question unless you require more detail, but can anyone give me some pointers to get going in the right direction? Is control via GSM a bit overkill?
 

For controlling a furnace i dont feel GSM is best option. But it can be done.
 

The issue is that I am away from the cabin for a few days at a time, and won't be in range for other wireless solutions. I know stuff like X10 exist or whatever it's called, but I've found some products that have relays that are based off of the GSM cell network. What I don't know/understand is how I would hook them up. Would I just interrupt the line between the thermostat to the furnace? Or would I try to run the mains power through the relay to the furnace? I'm just not an electronics guy, so I'm trying to get an idea of which path to start heading down.
 

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