Power unit with infinitely variable control unit. Plug in Class-2 Transformer. Input AC 120 V 60 Hz 150mA. Output :DC 9V 1A. Ideal for powering stationary fischertechnik models. Power unit with infinitely variable control unit. Plug in Class-2 Transformer. Input AC 120 V 60 Hz 150mA. Output :DC 9V 1A. Ideal for powering stationary fischertechnik models.