Fan speed control function for each step, Support RS-485 communication, temperature sensor, Using for Evaporated air cooler, etc This BLDC fan controller is special for Evaporated air cooler and Air supply exhaust units. the other function can be customized. GPBLDM-EUC (BLDC Fan type)Input Voltage: 220VAC, 50/60HzCondensation prevention function by temp.sensorPossible use of on dampersBathroom ...