Brushless EC motor, IP44, with thermal overload protection, suitable for single phase supply 230V +/- 15%- 50/60Hz.Fan supply with external ON-OFF electrical isolation switch, and potentiometer to adjust the fan speed.Also possible to control the fan speed with external potentiometer type REB-ECOWATT or analogue input signal 0-10V.This cabinet fan has been designed for indoor use, with inlet air temperatures between -20ºC up to +40ºC and suitable for mounting in any orientation.