I hadn’t heard of an M2M SIM before, but a quick googling of this seems like it’ll not work in this context, but I could be wrong.

One of my earlier posts discussed SIMs, and how it’s difficult to run it without some ongoing cost, particularly allowing for false alarms, plus it works solely on the Spark network. One programs others’ mobile numbers into it, and the device will call each number in turn - as such, surely it’s simply operating as a standard SIM?