When selecting a frequency inverter, please note that there are 3 variants. Firstly, these include the standard version unit, secondly, a unit with a membrane keypad, and thirdly, a unit with an MMI-operating unit. The “standard version frequency inverter” shown in our online shop is fully operational and contains a potentiometer built into the side but requires a corresponding operating unit for control.
For this purpose, one of the following options must also be ordered:
-          External operating unit (MMI with a cable and plug)
-          Interface cable for PC programming
-          Bluetooth adapter