scenemaster 4359 crossing signal controller

Walthers SceneMaster -- Grade Crossing Signal Controller - HO Scale * Adds realistic flash to all SceneMaster crossing signals * Controls up to 4 signals * Includes 4 optical sensors * Fully assembled control unit ready to use on DC layouts * Simple plug-in wiring connections * Operates on 18 volt AC from power pack accessory terminals * Complete installation & hook up instructions PLEASE NOTE: This unit is only for use on DC layouts - DCC systems can damage the controller.