Disclosed is a manual chain block that achieves a more compact overall device and also does not lose the strength of the device itself by means of the position of a reduction gear of a speed reduction mechanism section being able to be positioned closer to the center regardless of the bearing of a load sheave. The base station performing the transfer from one logical coverage area to another logical coverage area informs the wireless switching system controller of the change in logical coverage areas both for the base station itself and for each of the wireless handsets registered on the base station. The data information can be relatively static or dynamic, constantly changing data. Moreover, the connection interface of the connector juts outside the housing. The system design accounts for the return of goods to one or a few sources after delivery to a significant number of customers.