With its unique design LokSound 5 Nicro DCC Direct from ESU has been specially developed for installation in N gauge locomotives of the Atlas and Intermountain brands: it can be inserted directly instead of the analog board installed there as standard. However, the decoder can also be used for similar models from other manufacturers at your own discretion. The LokSound 5 micro DCC Atlas Legacy is also a direct style decoder developed for early (before 2016) Atlas, Intermountain (and others). The decoder was made for locos produced before sound was added during production. This replaces the popular ESU 73100 Select Direct Micro. Both the LokSound 5 Micro DCC Direct/Atlas Legacy with their dimensions of 66.0mm x 8.2mm are pure DCC decoders and come without a speaker.WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov