Athearn 76228 HO Scale 50' PS 5344 Boxcar Texas Mexican Railway TM 3186 Code 80 Switch Complete underbody brake system with Complete underbody brake system with over 20 separately applied parts non looped horn 1 alternate horn for locomotives with a second horn 4 Times Expanded Autopilot storage Expanded Startup and Shutdown sequences 2 Watt Audio output 84 db signal to noise ratio 16 bit audio resolution 24 sounds with separate volume control Unmatched frequency response as low as 20 Hz when paired with Rolling ThunderTM subwoofer kit 8 simultaneously playable audio channels Functional Dynamic Brake with Grid Blower sounds Improved motor control in DC and DCC Motor short circuit protection Works with NMRA standard DCC controllers Automatic Dual Mode: Works with DC power packs or DCC NOTE: Road number may vary from picture shown became the foundation for new per diem cars built in the 1970s Athearn 76228 HO Scale 50' PS 5344 Boxcar Texas Mexican Railway TM 3186