Using the Sound Feature on ScaleTrains Operator HO Scale Reefer Containers by adam October 23, 2021 In this short video, Mark McAllister from Product Support explains how to activate the sound feature on the ScaleTrains.com Operator HO Scale CIMC 53’ Reefer Containers. Learn more about the Operator HO Scale Containers here: s See also Awesome HO Scale BN Model Train Layout in HD - 2-21-2009