Reviving this thread. I’ve been looking at quite a few different ones but just settled on the Motorola MC4000. The feature that I really liked was the fact that it monitors temperature and AC power as well, so even with a total power failure it’s got a battery backup that still allows it to send a message. I’ve been testing it and everything works as advertised.
Opinions On Interior Cellular Temperature Monitors For Pets
in RVing With Pets
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if I have wifi do I need to pay monthly fee