: A wireless handheld controller that lets you operate the DH4 from the ground or from the back of a freight car for precise coupling.
: Automatically dims the lightbar and reduces rumble intensity when the battery drops below 15% to squeeze out more playtime. If you mean the DH4 Biplane (Flight Sims) dh4.zip
: An automatic sanding system that adjusts the grit flow based on real-time rail moisture and incline data. If you mean DS4Windows (Controller Utility) : A wireless handheld controller that lets you