Individual modular type PIO controller on each temperature zone ,with heating current of each temperature zone also the data of cooling & heating cycletime.
Drive - Danfoss or Reputed make
Each & every zone has function of auto tuningfor accurate temperature profiles
Cold start protections as a safety interlock - of screw barrel, also provision of cold start bypass.
Plug & play socket are used for easy operation & installation
Solid state - relay with heatsink used for heating control with heaterfailure protection