Controller, Type Access Power Controller Wall Mount, Material Steel, Finish Unfinished, Enclosure Depth (In.) 3.06, Enclosure Width (In.) 10.62, Enclosure Height (In.) 13.12, Length (In.) 6.60, Width (In.) 2.55, Height (In.) 5.60, Batteries Required No, Number of Outputs 4, Input Voltage 10 to 14VDC, Voltage Output 12VDC, Output Current (Amps) 1, Input Frequency (Hz) 60, Nonfused, For Use With NXT Readers, Access Power Controller