We also supply the corresponding electric (electronic) open or closed-loop control units for all the above types of conveying by vibration. Thyristor control sets for electromagnetic drives, stop control sets for twin unbalanced drives All control units come installed in IP 65 sheet steel housings which incorporate radio interference suppressors. For noise reduction and wear resistance, troughs are equipped with rubber or PU-linings. An austenitic manganese steel lining will be provided for high-wear applications.