"Reptile Guardian" is a temp/humidity monitor that can send alerts and remotely monitor things. No control, but you would know when an issue happened, even away from the house from how it sounds.
Beyond my budget right now. I've seen something similar called SensorPush from a Google search for it that is similar.
Never used any of them, but it's the closest I've seen for remote monitoring. Otherwise herpstat for control and better fail safe mechanism is the best for a thermostat. (Or if power draw allows for the thermostats, using 2 tstats in "series" with the one closer to the wall set a few degrees higher and takes over if the other fails "on" and your temps are only a few degrees too high which is far less dangerous short term. The other thermostat would remain on at all times while the main one is functional as it stops before it reaches the temp it is set to.)
Just had a new thought, but you could set up a wifi camera for around $20 and point it at a thermometer to be able to check the temp it is reading remotely when you would otherwise not hear a herpstat going off (such as during work or on vacation or other outings).
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