Abstract: An electronic control system for operating a pneumatic trash and linen conveying network comprises a plurality of circuits including a control circuit, a memory circuit, a timer circuit, a damper driver circuit and a station driver circuit. The system is substantially universal for any application, each printed circuit board being identical to every other printed circuit board of the same type. Although substantially universal, the system is adaptable to particular applications by means of a programmable member in the control circuit. The system also includes a station address system, as well as a plurality of travel times, whereby utmost efficiency in operation is achieved.