Digital speed drives — LED display and precise control for single-phase fans

Digital drives combine continuous speed adjustment with an LED display showing the exact percentage or speed selected — eliminating the uncertainty of an analogue potentiometer where you never know exactly where you are on the scale. Digital adjustment allows setting and memorising exact values, returning to the same setting after a power cut and, on some models, locking the setting to prevent accidental changes. Advantages over analogue controllers: setting precision (±1% vs ±10% for a potentiometer), numeric display of set value, restart memory, integrated electronic overvoltage and overtemperature protection, premium finish for visible mounting in commercial spaces or restaurants.