The digitally accurate sound comes from an amplified, 1" x 2 1/2" circuit board with a 2" speaker and requires 9 to 18V DC which can be provided by an alkaline battery or from the rail by using a device such as the RAM 59 listed below. The board can be triggered by a mechanical switch, magnetic track switch, DCC, the RAM 76 XTra Control or the RAM 102, 111, 112, 113 or 117 depending on your preference for control.
New old stock in Box