MRC Dual Power O27 270 Watt Transformer. It has 270 watts of big AC power, single or dual walk-around capability, whistle, direction and brake controls, a programmable start voltage, a programmable acceleration momentum, with walk-around throttle with memory. This unit was remove from an operating layout during it’s conversion from AC to TMCC. Includes one MCR AH900 walk-around throttle and instructions.