The RTX DOMINO is a family of electronic devices for controlling remote counters and cold rooms, with Stepper or Pulse type electronic expansion valve, characterised by the optimised management of overheating, that can be used singly or together in islands or remote counters with more evaporators. The flexibility of the controllers allows for counter or cold room applications to be selected and the most commonly used functions set quickly. The devices can be interfaced with a KDEPlus keyboard and the ECPlus display module.