Eyeboot 24V 25A DC Universal Regulated Switching Power Supply 600w for CCTV, Radio, Computer Project Input voltage: 100-120V ONLY Max Input Rated Voltage : 90 to 130VAC Output Voltage & Current : 24VDC 25A Smart device surge protection for Shortage Protection, Overload Protection, Over Voltage Protection IN-DOOR USE ONLY! When device is on, fan turns on too. As load increases so will the speed of the fan.