Can't help with the tech end, but I can promise if it were simple to set up and use, and reasonably priced, I know you'd have a market. The automatic email feature, I think, would multiply its function and desireability 10 fold (I've got to get a smart phone, one of these days).
A very common thread, seen on all the RV related forums I frequent, is concern for pets left in the rig while the owners are out and "...what happens if the power goes off?"
Jay & Peggy Monroe with Dolly
Can't take it with you - don't plan on leaving any behind
2016 Newmar London Aire 4553, Spartan chassis
Wrangler Unlimited toad