Specifications Other Informaton Scales HO A4X Instructions Current Rating 1.3 Amp (2.0 Amps Peak) Application - Drop-in, board replacement decoder for HO Scale Atlas, Athearn, Kato, etc. Size 2.86 x .680” x .145” 72.6mm x 17.3mm x 3.9mm   Installation Board Replacement Programming Guide Programming Worksheet Guide Advanced X Features Function Outputs 4-100mA Harness: None Features TCS Decoder Standard Feature List TCS Website

This is a board replacement decoder. You remove the old board and install this one in its place.