A pulse position modulated radio remote control system using distributed solid
state data processing that includes a remote-control unit and a master-control
unit, each unit having an associated transceiver so that information in the form
of radio signals can be exchanged bidirectionally between the two units. The master-control
unit controls operating functions of a pool or spa on command from the remote-control
unit. The master-control unit also monitors operating conditions of the pool or
spa and sends information about those conditions of the pool or spa and sends information
about those conditions to the remote-control unit on command from the remote-control
unit. A display on the remote-control unit allows a user to determine the status
of various operating parameters of the pool or spa, such as water temperature.
The remote-control unit also has a keypad that allows the user to input signals
to be sent to the master-control unit.
