Multifunctional devices
With analog and/or digital outputs
With analog/digital inputs
With variable I/O interface
With communication interface
With display
With data memory
With active/reactive energy meters
With alarm units
50/60 Hz
without
4
1
3
4
6
7
without
1
2
3
6
7
1
2
Modbus RTU
Ethernet, Modbus TCP
System analysis
Mechanical design