This is an O27 Lionel 1.8 Amp Accessory Tranformer. It"s for experienced train users. FEATURES: UL listed train hobby transformer powers accessories on O27 scale track. Finger-sized throttle knob increases power by being turned right; left turn decreases train power. Power transformer has been carefully tested and designed. Controller is equipped with with a built-in electronic circuit breaker that alternately cuts off and restores the flow of power to the accessory when a short circuit happens. Plugs into a U.S. standard 110V wall outlet. Instructions and limited warranty included. INCLUDES: One O27 1.8 amp Hobby Transformer REQUIRES: Accessory Wires U.S. Standard Electrical 110V Wall Outlet Necessary O27 Scale Track and Power Pack Equipment for Use SPECS: Input: 120VAC, 60HZ Output: 18VAC, 1.8A Height: 2-3/4" (16.7cm) Width: 4" (10cm) COMMENTS: CAUTION: Electrically operated product. Keep away from children under 8 years of age. Lionel power pack must be unplugged from wall when a short circuit is detected. If too many accessories are used, the controller will exceed its power limit and begin to cycle on and off. Accessories must be removed or a higher-output Lionel transformer used. Do not turn up transformer power too quickly. Unplug power pack from wall when the controller is not in use. san 8/14/01 ir/jl