Yeah, I haven't looked at it closely, but I wouldn't be surprised if the alert function has some sort of monthly payment. That's what it looks like it says on Reptile Basics for it.
I've done the wifi camera pointerd at probe thermometers myself before on vacation and while setting up cages to see fluctuations throughout the day while I work and found it to work well. I use herpstat, so I haven't needed to go beyond that level of remote monitoring before.
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