| 摘要 |
<p>A bath tub control circuit includes a microprocessor (10) for deenergising air and water pumps (47, 60) for a whirlpool bath (33) when a voice communication system (23, 24) is activated from the bath to reduce background noise. A stereophonic sound system also can be incorporated into the bath tub control circuit in the same manner. A carrier current control circuit (32) responds to the microprocessor (10) by sending control signals through a household electrical wiring circuit to regulate, from the bath tub (33), other functions, of which heat lamp, room illumination and door unlocking are typical.</p> |
