A system for delivering items through a network of pneumatic tubing includes a network of tubing, a system controller controlling operation of the system, a plurality of carriers for delivering items. Each of the plurality of carriers includes a wireless transmission component, a plurality of workstations arranged throughout the system in communication with the network of tubing, at least one blower and at least one diverter. The at least one blower is connected to at least two workstations of the plurality of workstations via the network of tubing passing through the at least one diverter, and a plurality of system transceivers arranged throughout the network of tubing and the plurality of workstations. At least one of the system transceivers receives carrier transit information from at least one of the wireless transmission components of one of the carriers, and the system controller adjusts the operation of the system based on the carrier transit information.