What amazes me is why didn't the power company used a Prepaid SIM card instead. A $150 recharge on Telstra for their prepaid mobile broadband gives 10 GB of da

What amazes me is why didn't the power company used a Prepaid SIM card instead. A $150 recharge on Telstra for their prepaid mobile broadband gives 10 GB of data allowance and has an expiry of 365 days. Seriously, how much data can the smart reader be sending back?