Sound "Bites" Photocell Actuated -- Large Steam

Sou Introducing sound modules that allow you to actuate sound on the layout. The versatile modules have the ability to generate continuously looped sounds (like idling locos), timed loops (grade crossing bells), or single shot sounds (horns and whistles), and actuate them on the layout with photocells or switches using 6 to 18 volt AC or DC. All sounds are actual recorded sounds, nothing artificial. All photocells and timers are included.