The MFJ-1317 is a compact, regulated switching power supply that provide 13.8 VDC at 2.89 amps. Input is 100 to 240 VAC, 50-60 Hz. The coaxial output plug is center positive. Please note that the AC input cord is not included. It needs a standard NEMA cord (like most PC use). One year limited manufacturer's warranty. Click here to view larger.