• 

  Rhomberg Electronics SP221

• 

  Rhomberg Electronics SUMLINE SP-220 replaced by the SP221

• 

  Kraus & Naimer CA10 A221 E-V

• 

  Asco Numatics Е221-041Е (obsolete, alternative: G617A82210A0010)

• 

  Eltra ER721A500Z5/28P10X6CR.221

• 

  Anritsu S-221K-01-1-TPC1-ANP

• 

  Reggiana Riduttori RR65FS R=4,65 RF2/21

• 

  Satron VOMNS221NRT227G1

• 

  Asco E221-041E

• 

  Stabilus 951 221