This HO sized decoder is designed for the Kato RS2/RSC2 and C44-9, Stewart VO-1000, Intermountain F7, Atlas U23B and U30B locomotives in HO Scale. The easiest installation possible, just plug it in! 1.3 Amp rating (2 Amp peak). Six function outputs and Silent RunningTM too! Size: 0.80" x 0.65" x 0.110".