Pulse position modulated dual transceiver remote control

A remote-operated control-and-status-update system for a pool or spa comprising:

• a remote-control unit including a display and a keypad;
• a first transceiver connected to said remote control unit;
• a master-control unit attached to a pool or spa;
• and with distributed solid state data processing;
• and
• a second transceiver connected to said master control unit;
• wherein said first transceiver sends command signals to said second transceiver and said first transceiver, receives status signals from said second transceiver;
• and wherein the command signals and the status signals are pulse position modulated radio waves that travel through air between said first and second transceivers, wherein said remote-control unit and said master-control unit both include means for both controlling necessary operating functions and obtaining status information regarding operating parameters.

A method of communicating control information from a distance to a control-and-monitor unit and obtaining status information from a distance from a control-and-monitor unit, the control-and-monitor unit associated with a pool or spa, the method comprising the steps of:

• transmitting from a remote-control unit to the master-control unit at least one pulse position modulated radio-wave signal command concerning an operating function of the pool or spa;
• sending from the remote control unit to the master-control unit at least one pulse position modulated radio-wave signal requesting that status information concerning operating parameters of the pool or spa be sent from the master-control unit to the remote-control unit;
• and
• reading status information displayed by the remote-control unit and received from the master-control unit in response to the request signal of said sending step.