#3500 Innovator Walk Around Throttle,4.0 Amps. Offers smooth, slow operation. Contains an innovative feature called Log Precision Control. This feature effectively cuts the output voltage almost in half while allowing control from 270 potentiometers. Each throttle contains a two piece walk around throttle with memory, forward and reverse, adjustable rate momentum and braking, low level disappearing pulse for ultra slow motion, push button acceleration and deceleration buttons, emergency stop button, speed switch, overload protection, power/overload indicator and two control modes (control knob or push buttons). No modifications to your locomotives or power units is required. A separate dedicated power transformer is suppled with each throttle. Comes complete with detailed instructions, one throttle jack, lead cables and a one year limited warranty against defective materials and workmanship. Just right for your switching yards, branch lines and any place that needs better and smoother control that DCC and other transfomers cannot provide.