RTN400 are compact controllers for plug-in and remote cabinets with thermostatic valve control. RTN400 controllers are compact and stand out for the high-performance and high flexibility they offer through energy-saving algorithms and the direct control of compressor and fans. RTN400 SM provides energy savings in supermarkets and commercial food distribution and storage applications; it is suitable for the control of EMBRACO VNEU and SECOP CCD variable speed compressors, obtaining maximum performance through a control algorithm with self-learning of operating parameters. It also combines optimised defrost cycle management, dewpoint-based heating and anti-condensation element modulation and cold room set point modulation, with automatic identification of open/closed operational time bands. RTN400 controllers can be interfaced with KDEPlus and KDWPlus keyboards and with the ECPlus display module. The RTN600 electronic controllers have energy-saving functions for use in supermarkets and commercial food distribution and storage applications. RTN600 combine optimised defrost cycle management, dewpoint-based heating and anti-condensation element modulation and cold room set point modulation, with automatic identification of open/closed operational time bands. Configuration has been simplified by introducing pre-set profiles for 8 separate applications that can be easily selected through the KDEPlus and KDWPlus user terminals. The remote ECPlus display can be used to view displayed date from up to 100m away, differentiating it from the data displayed on KDEPlus and KDWPlus terminals.