Voltage Consistency: There is no voltage fluctuation during power up, transmit, receive, shut down. There is no fan inside the case and it runs quietly. The metal case has many holes to make heat dissipation more efficient. Input: 110V/220V AC; Safety features: automatic overload cut-off, over-voltage cut-off, automatic thermal cut-off, short circuit protection. Perfect for LED Strips, 3D Printers, Ham Radio Transceivers, CCTV Cameras, Car Subwoofer Amplifiers, Audio Amplifiers, Wireless Routers, ADSL Cats, HUB, Audio/Video Power Supplies. Indoor use only!, Weight: 1.0692419707 Pounds, Manufacturer: Jaywool