Thomas & Friends DCC SOUND MODULE - Large Scale. Bring the sounds of Sodor to life with a separate-sale Sound Module to install in your Large Scale Thomas & Friends™ engines! Solder pad installation and customer-supplied speaker required. Dual-mode DCC/DC operation. Sound package includes whistle or bell per prototype, chuff, and cylinder blow down. Also controls customer-installed headlamp(s) if desired. Character sound suites available through DCC CV selection only. Character sound suites include Thomas, Percy, James, Edward, Henry, Gordon, Emily, Spencer, and Toby. Factory pre-set for Thomas. Designed for Large Scale use only.