Ryobi 924 Staight 4 Remote Ink Key Control PCS-G, IVS, Cocking, Semi Auto plate changer, RYOBI-matic continuous dampening system Dampening solution cooling / circulation device RYOBI PDS-E AUTO / PDS-E printing density control system (densitometer) RYOBI PDS-E Spectro AUTO / PDS-E Spectro printing density control system (spectrophotometer), ink roller temperature chiller