Four fans be controlled, 230V AC input and 48VDC rated output voltage, Open collector tache output, fan failure/over temp.alarm This brushless dc fan speed and temperature controller can control 4 fans in a time, are widely used for HVAC, telecommunication, IT industry and clean room, etc.Fan controller Input Voltage: 230V 50/60HzFan controller Output voltage: 24VDC, 48VDC or 56VDCFan controller ...