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National Trackwork Solar Glide Model 1500 trailable switch machine is equipped with solar panel technology capable of operating with 98 percent efficiency in cloudy or shaded areas, says the company. It is equipped with a circuit breaker module that, in the event of obstructions or ballast caught between the points, shuts off and resets once the obstruction is removed. In case of power failure, it is equipped with a manual override. It has remote control capabilities with an optional motorized sun tracker or solar panel. Without any hydraulic attachments, it is a single electrical power source.