Lionel 6 82023 O Command Control Sawmill ProductID_12146331 Simple 3 wire output to the Simple 3 wire output to the device being controlled 3 high power terminals for direct connection of point frogs and or panel LEDs and or signals 3 switch terminals with the option of one or two push button switches Feedback IO data is provided via a pair of solder pads– These output a low voltage as needed with output changing from 0v to +5v for direct connection of position feedback to systems that require it – or to any computer IO interface at all and FA1 diesels Operation of strobe lights This is a Lionel 6 82023 O Command Control Sawmill