In my line of work, I am responsible for the remote monitoring of sensors, such as temperature sensors and various others, for customers in the industrial sector. Along with sensor monitoring, we also deal with PLC technology and MIDS as they pertain to industrial equipment such as pumps and electrical equipment.
I use SolarWinds Network Device Monitor for monitoring the equipment remotely over the internet such as via LTE. To be clear, we only use it for monitoring the switching and routing of the network devices. For similar types of monitoring, but more to do with PLCs and the MIDS, we also utilize a solution called PRTG.