5th generation devices will be available soon.
The most important innovation is that Mid Devices are no longer necessary. SPE switches are built into the sensors. Two or four external SPE ports and one or two internal hosts offer flexible solutions for line, daisy-chain, or mesh network topologies. The control computers become a direct part of this network. In addition, the sensors can now also carry out measurements independently. A computer on the AE network is only required for settings and display of results. For example, this option significantly reduces power consumption for long-term measurements.
4th generation sensors are obsolete. They are only sold for the expansion of existing measuring systems.